阅读说明：本技术 一种波纹管真空充氦气密封装置 (Bellows vacuum helium-charging air sealing device ) 是由 胡雁鸣 于 2019-11-22 设计创作，主要内容包括：本发明公开一种波纹管真空充氦气密封装置,属于波纹管技术领域。所述波纹管真空充氦气密封装置包括工作台、波纹管、抽真空机构、氦气填充机构、下压密封机构和控制箱；所述波纹管顶端连通有金属管,所述波纹管连同所述金属管均放置于所述工作台上；所述抽真空机构和所述氦气填充机构分别通过管道与所述金属管连通,通过同一根所述金属管对所述波纹管抽真空和充氦气,能够有效解决漏气问题；所述下压密封机构位于所述金属管上方,用于冲压所述金属管,从而使所述波纹管密封；所述控制箱能够控制所述抽真空机构、所述氦气填充机构和所述下压密封机构依次工作,从而实现自动化生产。(The invention discloses a vacuum helium-filling air-tight sealing device for a corrugated pipe, and belongs to the technical field of corrugated pipes. The bellows vacuum helium-filling air-sealing device comprises a workbench, a bellows, a vacuumizing mechanism, a helium filling mechanism, a pressing sealing mechanism and a control box; the top end of the corrugated pipe is communicated with a metal pipe, and the corrugated pipe and the metal pipe are both placed on the workbench; the vacuumizing mechanism and the helium filling mechanism are respectively communicated with the metal pipe through pipelines, and the corrugated pipe is vacuumized and filled with helium through the same metal pipe, so that the problem of gas leakage can be effectively solved; the downward pressing sealing mechanism is positioned above the metal pipe and used for punching the metal pipe so as to seal the corrugated pipe; the control box can control the vacuumizing mechanism, the helium filling mechanism and the pressing sealing mechanism to work in sequence, so that automatic production is realized.)

1. A bellows vacuum helium-filling air-tight sealing device is characterized by comprising a workbench (1), a bellows (2), a vacuumizing mechanism (3), a helium filling mechanism (4), a pressing sealing mechanism (5) and a control box (6);

the top end of the corrugated pipe (2) is communicated with a metal pipe (21), and the corrugated pipe (2) and the metal pipe (21) are both placed on the workbench (1);

the vacuumizing mechanism (3) and the helium filling mechanism (4) are respectively communicated with the metal pipe (21) through pipelines and are respectively used for vacuumizing and filling helium into the corrugated pipe (2);

the pressing sealing mechanism (5) is positioned above the metal pipe (21) and is used for punching the metal pipe (21) so as to seal the corrugated pipe (2);

the control box (6) can control the vacuumizing mechanism (3), the helium filling mechanism (4) and the pressing sealing mechanism (5) to work in sequence, so that automatic production is realized.

2. A bellows vacuum helium-filled gas sealing device according to claim 1, wherein said work table (1) is provided with a bellows holder (11) for placing a tube body of said bellows (2); the punching machine is characterized in that a punching groove is further formed in the workbench (1), and the punching groove is located below the metal pipe (21).

3. A bellows vacuum helium-filled gas sealing device according to claim 1, wherein said evacuation mechanism (3) comprises a vacuum pump (31), a vacuum tube (32) and a sealing interface (33), both ends of said vacuum tube (32) are respectively communicated with said vacuum pump (31) and said sealing interface (33); the sealing interface (33) is fixedly connected to the workbench (1) and used for connecting the vacuum tube (32) and the metal tube (21).

4. A bellows vacuum helium-filling gas sealing device according to claim 3, wherein said helium filling mechanism (4) comprises a helium tank (41), a helium pipe (42) and a pressure gauge (43); two ends of the helium pipe (42) are respectively communicated with the helium bottle (41) and the sealing interface (33); the pressure gauge (43) is positioned at the top end of the helium bottle (41), and the residual amount of helium in the helium bottle (41) is judged by detecting the pressure value of the pressure gauge (43).

5. A bellows vacuum helium-filled gas sealing device according to claim 1, wherein said push-down sealing mechanism (5) comprises a cylinder frame (51), a telescopic cylinder (52) and a push-down rod (53); the telescopic cylinder (52) is located on the cylinder frame (51), and under the action of an external air pump, the telescopic cylinder (52) can drive the lower pressing rod (53) to move back and forth along the vertical direction.

6. The hermetic sealing device for vacuum helium-filled bellows of claim 5, wherein a guide plate (55) is fixedly connected to the lower pressing rod (53), guide rods (54) are respectively provided at both sides, and the guide rods (54) penetrate through the guide plate (55); the pressing-down rod (53) can move back and forth along the guide rod (54) under the action of the guide plate (55), so that the position accuracy of pressing-down of the guide rod (54) is ensured.

7. A bellows vacuum helium-filled gas-tight seal according to claim 5, wherein a punch (7) is fixedly attached to the top end of said push-down rod (53) for punching and deforming said metal tube (21) to form a seal.

8. A bellows vacuum helium gas-filled hermetic seal according to claim 1, wherein the control box (6) comprises a control panel (61), an alarm lamp (62) and a control switch (63).

9. The bellows vacuum helium-filled air-tight sealing device according to claim 1, wherein a two-hand switch (8) is provided on the bellows vacuum helium-filled air-tight sealing device, and the two-hand switch (8) needs to be pressed simultaneously to start the operation, thereby preventing the misoperation.

10. The bellows vacuum helium sealing device according to claim 1, wherein the bellows vacuum helium sealing device is provided with infrared sensors (9) on both sides of the inside thereof for sensing the presence of foreign objects in the bellows vacuum helium sealing device, and the bellows vacuum helium sealing device is stopped in an emergency.

Technical Field

The invention relates to the technical field of corrugated pipes, in particular to a vacuum helium-filling air-tight sealing device for a corrugated pipe.

Background

The corrugated pipe is a tubular elastic sensitive element which is formed by connecting foldable corrugated sheets along the folding and stretching direction. The corrugated pipe has wide application in instruments and meters, and is mainly used as a measuring element of a pressure measuring instrument to convert pressure into displacement or force. The corrugated pipe has thin pipe wall and high sensitivity, and the measurement range is from tens of Pa to tens of MPa. Its open end is fixed, its sealed end is in free state, and its elasticity is increased by using auxiliary helical spring or reed. When working, the pipe is extended along the length direction under the action of internal pressure, so that the movable end generates displacement in a certain relation with the pressure. The movable end drives the pointer to directly indicate the pressure. Bellows are often combined with displacement sensors to form pressure sensors that output an electrical quantity, sometimes also acting as isolation elements.

During the manufacturing process, the corrugated pipe needs to be vacuumized and filled with helium gas, and then sealed, so that the corrugated pipe can be connected with other elements for use. At present, most of corrugated pipes are separately treated when the corrugated pipes are vacuumized, filled with helium and sealed, air is easy to leak from the corrugated pipes when the corrugated pipes are filled with the helium, air exists in the corrugated pipes, and the corrugated pipes become defective products, and the production efficiency of each process is low due to independent operation.

Disclosure of Invention

The invention aims to provide a vacuum helium-filling air-sealing device for a corrugated pipe, which aims to solve the problems that the production efficiency of each process of the existing corrugated pipe is low due to independent operation and the corrugated pipe is easy to leak gas during helium filling.

In order to solve the technical problem, the invention provides a bellows vacuum helium-filling and air-sealing device which comprises a workbench, a bellows, a vacuumizing mechanism, a helium filling mechanism, a pressing and sealing mechanism and a control box, wherein the bellows is arranged on the workbench;

the top end of the corrugated pipe is communicated with a metal pipe, and the corrugated pipe and the metal pipe are both placed on the workbench;

the vacuumizing mechanism and the helium filling mechanism are respectively communicated with the metal pipe through pipelines and are respectively used for vacuumizing the corrugated pipe and filling helium;

the downward pressing sealing mechanism is positioned above the metal pipe and used for punching the metal pipe so as to seal the corrugated pipe;

the control box can control the vacuumizing mechanism, the helium filling mechanism and the pressing sealing mechanism to work in sequence, so that automatic production is realized.

Optionally, a corrugated pipe frame is arranged on the workbench and used for placing a pipe body of the corrugated pipe; and the workbench is also provided with a stamping groove which is positioned below the metal pipe.

Optionally, the vacuum pumping mechanism includes a vacuum pump, a vacuum tube and a sealing interface, and two ends of the vacuum tube are respectively communicated with the vacuum pump and the sealing interface; the sealing interface is fixedly connected to the workbench and used for connecting the vacuum tube and the metal tube.

Optionally, the helium filling mechanism comprises a helium tank, a helium pipe and a pressure gauge; two ends of the helium pipe are respectively communicated with the helium bottle and the sealing interface; the pressure gauge is positioned at the top end of the helium bottle, and the residual amount of helium in the helium bottle is judged by detecting the pressure value of the pressure gauge.

Optionally, the pressing sealing mechanism comprises a cylinder frame, a telescopic cylinder and a pressing rod; the telescopic cylinder is located on the cylinder frame, and under the action of an external air pump, the telescopic cylinder can drive the lower pressing rod to move back and forth along the vertical direction.

Optionally, a guide plate is fixedly connected to the lower pressing rod, guide rods are respectively arranged on two sides of the lower pressing rod, and the guide rods penetrate through the guide plate; the lower pressing rod can move back and forth along the guide rod under the action of the guide plate, so that the position accuracy of the guide rod pressing is guaranteed.

Optionally, a punch is fixedly connected to the top end of the lower pressing rod, and is used for punching the metal tube to deform the metal tube, so that a seal is formed.

Optionally, the control box includes a control panel, an alarm lamp and a control switch.

Optionally, be equipped with both hands switch on the bellows vacuum helium gas sealing device that fills, need press simultaneously both hands switch just can start-up operation, can prevent the maloperation.

Optionally, infrared sensors are respectively disposed on two sides of the interior of the bellows vacuum helium-filled air sealing device, and are used for sensing that foreign matter exists in the bellows vacuum helium-filled air sealing device, and the bellows vacuum helium-filled air sealing device is emergently suspended.

The invention provides a bellows vacuum helium-filling gas-sealing device which comprises a workbench, a bellows, a vacuumizing mechanism, a helium filling mechanism, a pressing sealing mechanism and a control box, wherein the bellows is arranged on the workbench; the top end of the corrugated pipe is communicated with a metal pipe, and the corrugated pipe and the metal pipe are both placed on the workbench; the vacuumizing mechanism and the helium filling mechanism are respectively communicated with the metal pipe through pipelines, and the corrugated pipe is vacuumized and filled with helium through the same metal pipe, so that the problem of gas leakage can be effectively solved; the downward pressing sealing mechanism is positioned above the metal pipe and used for punching the metal pipe so as to seal the corrugated pipe; the control box can control the vacuumizing mechanism, the helium filling mechanism and the pressing sealing mechanism to work in sequence, so that automatic production is realized.

Drawings

FIG. 1 is a schematic structural diagram of a bellows vacuum helium-filling hermetic sealing device provided by the present invention;

FIG. 2 is an enlarged view of the work bench and the bellows of the bellows vacuum helium-filled hermetic sealing device provided by the present invention.

Detailed Description

The present invention provides a bellows vacuum helium-filled hermetic sealing device, which is further described in detail below with reference to the accompanying drawings and specific embodiments. Advantages and features of the present invention will become apparent from the following description and from the claims. It is to be noted that the drawings are in a very simplified form and are not to precise scale, which is merely for the purpose of facilitating and distinctly claiming the embodiments of the present invention.

The invention provides a bellows vacuum helium-filling air-sealing device, which comprises a workbench 1, a bellows 2, a vacuumizing mechanism 3, a helium filling mechanism 4, a pressing sealing mechanism 5 and a control box 6, wherein the bellows is arranged on the workbench; a metal pipe 21 is communicated with the top end of the corrugated pipe 2, and the corrugated pipe 2 and the metal pipe 21 are both placed on the workbench 1; the vacuumizing mechanism 3 and the helium filling mechanism 4 are respectively communicated with the metal pipe 21 through pipelines and are respectively used for vacuumizing and filling helium into the corrugated pipe 2, and the vacuumizing pipeline and the helium filling pipeline are simultaneously communicated with the metal pipe 21, so that the corrugated pipe 2 can be effectively prevented from air leakage by sequentially vacuumizing and filling helium; the downward pressing sealing mechanism 5 is positioned above the metal pipe 21 and is used for punching the metal pipe 21 so as to enable the corrugated pipe 2 to be sealed in a deformation mode; the control box 6 can control the vacuumizing mechanism 3, the helium filling mechanism 4 and the pressing sealing mechanism 5 to work in sequence, so that automatic production is realized.

Specifically, as shown in fig. 1 and 2, a bellows holder 11 is arranged on the workbench 1 and used for placing a tube body of the bellows 2, and the tube body of the bellows 2 is placed on the bellows holder 11 to ensure that the bellows 2 is stable and safe in the processes of vacuumizing and helium filling; the workbench 1 is also provided with a stamping groove which is positioned below the metal pipe 21; the vacuum pumping mechanism 3 comprises a vacuum pump 31, a vacuum tube 32 and a sealing interface 33, wherein two ends of the vacuum tube 32 are respectively communicated with the vacuum pump 31 and the sealing interface 33; the sealing interface 33 is fixedly connected to the working table 1, and is used for connecting the vacuum tube 32 and the metal tube 21.

Specifically, with continued reference to fig. 1, the helium filling mechanism 4 includes a helium tank 41, a helium pipe 42 and a pressure gauge 43; two ends of the helium pipe 42 are respectively communicated with the helium bottle 41 and the sealing interface 33; the pressure gauge 43 is positioned at the top end of the helium bottle 41, and the residual amount of helium in the helium bottle 41 is judged by detecting the pressure value of the pressure gauge 43; the downward pressing sealing mechanism 5 comprises a cylinder frame 51, a telescopic cylinder 52 and a lower pressing rod 53; the telescopic cylinder 52 is positioned on the cylinder frame 51, and under the action of an external air pump, the telescopic cylinder 52 can drive the lower pressure rod 53 to move back and forth along the vertical direction; a guide plate 55 is fixedly connected to the lower pressure lever 53, guide rods 54 are respectively arranged on two sides of the lower pressure lever, and the guide rods 54 penetrate through the guide plate 55; the down-pressure rod 53 can move back and forth along the guide rod 54 under the action of the guide plate 55, so that the position accuracy of the down-pressure of the guide rod 54 is ensured; the top end of the lower pressing rod 53 is fixedly connected with a punch 7, the shape of the punch 7 is matched with that of the punching groove, the punch 7 punches into the punching groove, and the metal pipe 21 is extruded and deformed to form sealing.

Further, the control box 6 comprises a control panel 61, a warning lamp 62 and a control switch 63, wherein the control switch 63 can control the opening or closing of the vacuum pump 31, the opening or closing of the helium tank 41 and the stroke of the downward pressing sealing mechanism 5; when an operation error occurs, the red light of the alarm lamp 62 flickers and an error prompt appears on the control panel 61, so that the safety factor is improved; the bellows vacuum helium-filled air sealing device is provided with a two-hand switch 8, and the operation can be started only by pressing the two-hand switch 8 at the same time, so that misoperation can be effectively prevented; inside both sides of bellows vacuum helium gas sealing device are all equipped with infrared inductor 9, get into when operating personnel's hand or other instrument in the course of the work bellows vacuum helium gas sealing device is inside, infrared inductor 9 can sense to emergent pause bellows vacuum helium gas sealing device further improves factor of safety.

The above description is only for the purpose of describing the preferred embodiments of the present invention, and is not intended to limit the scope of the present invention, and any variations and modifications made by those skilled in the art based on the above disclosure are within the scope of the appended claims.