阅读说明：本技术 一种高真空铜管轴封及顶出装置 (High vacuum copper pipe shaft seal and ejection device ) 是由 白杰昌 廖建明 林财飞 夏俊 于 2019-10-31 设计创作，主要内容包括：本发明公开了一种高真空铜管轴封及顶出装置,包括壳体、轴封座、压紧机构,该壳体设有输气通道,轴封座密封连接于壳体,铜管一端穿过轴封座进入输气通道内,轴封座与铜管之间配合有密封圈,该密封圈由压紧机构压紧或松开,且在压紧状态对铜管和轴封座之间形成轴封；还包括顶出机构,该顶出机构包括动力件、顶杆,该顶杆一端密封伸入输气通道内,另一端连接动力件,通过该动力件驱使顶杆轴向运动而将被切断的铜管顶起。所述顶出机构的设置,能够在铜管被切断后,将留在装置上的铜管向上顶出一定距离,方便人工取出,从而提高工作效率。(The invention discloses a high vacuum copper tube shaft seal and ejection device, which comprises a shell, a shaft seal seat and a pressing mechanism, wherein the shell is provided with a gas transmission channel, the shaft seal seat is connected with the shell in a sealing way, one end of a copper tube penetrates through the shaft seal seat to enter the gas transmission channel, a seal ring is matched between the shaft seal seat and the copper tube, the seal ring is pressed or loosened by the pressing mechanism, and a shaft seal is formed between the copper tube and the shaft seal seat in a pressing state; the copper pipe jacking device comprises a power piece and a jacking rod, wherein one end of the jacking rod hermetically extends into the gas transmission channel, the other end of the jacking rod is connected with the power piece, and the jacking rod is driven by the power piece to axially move so as to jack up the cut copper pipe. The copper pipe on the device can be ejected out for a certain distance after the copper pipe is cut off by the ejection mechanism, so that the copper pipe can be taken out manually, and the working efficiency is improved.)

1. A high vacuum copper tube shaft seal and ejection device comprises a shell, a shaft seal seat and a pressing mechanism, wherein the shell is provided with a gas transmission channel, the shaft seal seat is connected with the shell in a sealing manner, one end of a copper tube penetrates through the shaft seal seat to enter the gas transmission channel, a sealing ring is matched between the shaft seal seat and the copper tube, the sealing ring is pressed or loosened by the pressing mechanism, and a shaft seal is formed between the copper tube and the shaft seal seat in a pressing state; the method is characterized in that: the copper pipe jacking device comprises a power piece and a jacking rod, wherein one end of the jacking rod hermetically extends into the gas transmission channel, the other end of the jacking rod is connected with the power piece, and the jacking rod is driven by the power piece to axially move so as to jack up the cut copper pipe.

2. The high vacuum copper tube shaft seal and ejection device of claim 1, wherein: the power part is an ejection cylinder, and a piston rod of the ejection cylinder is connected with the other end of the ejector rod.

3. The high vacuum copper tube shaft seal and ejection device of claim 2, wherein: the bottom of the shell is hermetically connected with a hollow sealing seat, and the ejector rod penetrates through the top of the sealing seat in a sealing manner to enable one end of the ejector rod to enter the gas transmission channel in a sealing manner; the ejection cylinder is arranged at the bottom of the sealing seat, and a piston rod of the ejection cylinder extends upwards into the sealing seat and is connected with the other end of the ejector rod through a vertical first connecting rod.

4. The high vacuum copper tube shaft seal and ejection device of claim 1, wherein: the inner side surface of the shaft seal seat is provided with an annular positioning boss, and the sealing ring is positioned on the positioning boss.

5. The high vacuum copper tube shaft seal and ejection device of claims 1 or 4, wherein: the pressing mechanism comprises a shaft seal pressing seat, a pull rod and a shaft seal air cylinder, the pull rod is arranged in the shell in a vertically movable mode, the top end of the pull rod is connected with the shaft seal pressing seat, an annular pressing boss used for pressing the sealing ring is arranged at the bottom of the shaft seal pressing seat, the pressing boss can extend into the shaft seal seat, and the copper pipe penetrates through the pressing boss; the bottom end of the pull rod is connected with a shaft seal cylinder, and the pull rod is driven to move upwards or downwards by the shaft seal cylinder.

6. The high vacuum copper tube shaft seal and ejection device of claim 5, wherein: a linear bearing is matched between the pull rod and the shell.

7. The high vacuum copper tube shaft seal and ejection device of claim 5, wherein: the bottom of the shaft seal pressing seat is provided with a guide cylinder which surrounds the pressing boss and is movably sleeved outside the shaft seal seat.

8. The high vacuum copper tube shaft seal and ejection device of claim 5, wherein: the shaft seal cylinder is arranged in the shell, a piston rod of the shaft seal cylinder faces downwards, and the shaft seal cylinder is connected with the bottom end of the pull rod through a horizontal second connecting rod.

9. The high vacuum copper tube shaft seal and ejection device of claim 5, wherein: the number of the pull rods is a plurality, and the pull rods are distributed in parallel and driven by the same shaft seal cylinder.

10. The high vacuum copper tube shaft seal and ejection device of claim 5, wherein: the top end of the pull rod is locked with the shaft seal pressing seat through a bolt.

Technical Field

The invention relates to production equipment of a high-voltage direct-current relay, in particular to a high-vacuum copper tube shaft seal and ejection device.

Background

In the production process of the high-voltage direct-current relay, the ceramic cover of the high-voltage direct-current relay needs to be vacuumized and filled with inert gas, wherein the gas is output or input through a copper pipe arranged on the ceramic cover. The process is generally realized by a high vacuum copper tube shaft seal mechanism, the mechanism is provided with a gas transmission channel, a copper tube passes through a shaft seal seat of the mechanism and enters the gas transmission channel, a seal ring is matched between the shaft seal seat and the copper tube, the seal ring is pressed or loosened by a pressing mechanism, and a shaft seal is formed between the copper tube and the shaft seal seat in a pressing state. The gas transmission channel of the mechanism is connected with a vacuum pump and a gas pump in sequence, and the processes of vacuumizing the ceramic cover and filling inert gas are completed through a copper pipe. After that, the copper tube is cut off by a cutting mechanism, the copper tube is divided into two parts, one part is left on the product, and the other part is left on the high vacuum copper tube shaft seal mechanism. At present, the other part of the copper pipe is manually taken out, and the exposed part of the other part of the copper pipe is very short, so that the defects of inconvenient operation, low working efficiency and the like exist.

Disclosure of Invention

The invention aims to provide a high vacuum copper tube shaft seal and an ejection device which are convenient for taking out a copper tube, aiming at the technical problems in the prior art.

The technical scheme adopted by the invention for solving the technical problems is as follows: a high vacuum copper tube shaft seal and ejection device comprises a shell, a shaft seal seat and a pressing mechanism, wherein the shell is provided with a gas transmission channel, the shaft seal seat is connected with the shell in a sealing manner, one end of a copper tube penetrates through the shaft seal seat to enter the gas transmission channel, a sealing ring is matched between the shaft seal seat and the copper tube, the sealing ring is pressed or loosened by the pressing mechanism, and a shaft seal is formed between the copper tube and the shaft seal seat in a pressing state; the copper pipe jacking device comprises a power piece and a jacking rod, wherein one end of the jacking rod hermetically extends into the gas transmission channel, the other end of the jacking rod is connected with the power piece, and the jacking rod is driven by the power piece to axially move so as to jack up the cut copper pipe.

Furthermore, the power part is an ejection cylinder, and a piston rod of the ejection cylinder is connected with the other end of the ejector rod.

Furthermore, the bottom of the shell is hermetically connected with a hollow sealing seat, and the ejector rod penetrates through the top of the sealing seat in a sealing manner to enable one end of the ejector rod to enter the gas transmission channel in a sealing manner; the ejection cylinder is arranged at the bottom of the sealing seat, and a piston rod of the ejection cylinder extends upwards into the sealing seat and is connected with the other end of the ejector rod through a vertical first connecting rod.

Furthermore, an annular positioning boss is arranged on the inner side surface of the shaft seal seat, and the sealing ring is positioned on the positioning boss.

Furthermore, the pressing mechanism comprises a shaft seal pressing seat, a pull rod and a shaft seal air cylinder, wherein the pull rod is arranged in the shell in a vertically movable mode, the top end of the pull rod is connected with the shaft seal pressing seat, the bottom of the shaft seal pressing seat is provided with an annular pressing boss used for pressing the sealing ring, the pressing boss can extend into the shaft seal seat, and the copper pipe penetrates through the pressing boss; the bottom end of the pull rod is connected with a shaft seal cylinder, and the pull rod is driven to move upwards or downwards by the shaft seal cylinder.

Furthermore, a linear bearing is matched between the pull rod and the shell.

Furthermore, a guide cylinder is arranged at the bottom of the shaft seal pressing seat, surrounds the pressing boss and is movably sleeved outside the shaft seal seat.

Furthermore, the shaft seal cylinder is arranged in the shell, a piston rod of the shaft seal cylinder faces downwards, and the shaft seal cylinder is connected with the bottom end of the pull rod through a horizontal second connecting rod.

Furthermore, the number of the pull rods is several, and the pull rods are distributed in parallel and driven by the same shaft seal cylinder.

Furthermore, the top end of the pull rod and the shaft seal pressing seat are locked through a bolt.

Compared with the prior art, the invention has the following beneficial effects:

1. the copper pipe on the device can be ejected out for a certain distance after the copper pipe is cut off by the ejection mechanism, so that the copper pipe can be taken out manually, and the working efficiency is improved.

2. The pull rod adopts linear bearing direction, can guarantee the stability of pull rod motion.

3. The pull rod and the shaft seal pressing seat are locked through the bolt, and the shaft seal pressing seat is guaranteed not to be loosened, so that the sealing performance and stability of the copper pipe shaft seal can be guaranteed, and the leakage probability is reduced.

The invention is further explained in detail with the accompanying drawings and the embodiments; however, the high vacuum copper tube shaft seal and the ejection device of the present invention are not limited to the embodiments.

Drawings

FIG. 1 is a schematic structural view of the present invention;

fig. 2 is a cross-sectional view a-a of the present invention.

Detailed Description

In an embodiment, please refer to fig. 1 and fig. 2, the high vacuum copper tube shaft seal and ejection device of the present invention includes a housing 1, a shaft seal seat 6, and a pressing mechanism, wherein the housing 1 is provided with a gas transmission channel 11, the shaft seal seat 6 is hermetically connected to the housing 1, one end of a copper tube passes through the shaft seal seat 6 and enters the gas transmission channel 11, a sealing ring 8 is fitted between the shaft seal seat 6 and the copper tube, the sealing ring 8 is pressed or loosened by the pressing mechanism, and a shaft seal is formed between the copper tube and the shaft seal seat 6 in a pressed state. The invention also comprises an ejection mechanism, the ejection mechanism comprises a power piece and an ejector rod 3, one end of the ejector rod 3 hermetically extends into the gas transmission channel 11, the other end of the ejector rod is connected with the power piece, and the power piece drives the ejector rod 3 to axially move so as to eject the cut copper pipe. The sealing ring 8 is an O-ring, but is not limited thereto.

In this embodiment, the power component is an ejection cylinder 4, and a piston rod of the ejection cylinder 4 is connected to the other end of the ejector rod 3. The bottom of the shell 1 is hermetically connected with a hollow sealing seat 12, and the ejector rod 3 penetrates through the top of the sealing seat 12 in a sealing manner to enable one end of the ejector rod to enter the gas transmission channel 11 in a sealing manner; the ejection cylinder 4 is arranged at the bottom of the sealing seat 12, and a piston rod of the ejection cylinder 4 extends upwards into the sealing seat and is connected with the other end of the ejector rod 3 through a vertical first connecting rod 41.

In this embodiment, an annular positioning boss 61 is disposed on an inner side surface of the shaft seal seat 6, and the seal ring 8 is located on the positioning boss 61. The pressing mechanism comprises a shaft seal pressing seat 7, a pull rod 2 and a shaft seal air cylinder 5, the pull rod 2 can be arranged in the shell 1 in a vertically moving mode, the top end of the pull rod 2 is connected with the shaft seal pressing seat 7, and specifically, the top end of the pull rod 2 and the shaft seal pressing seat 7 are locked through bolts from top to bottom. The bottom of the shaft seal pressing seat 7 is provided with an annular pressing boss 71 for pressing the seal ring 8, the pressing boss 71 can extend into the shaft seal seat 6, and the copper pipe passes through the pressing boss 71; the bottom end of the pull rod 2 is connected with a shaft seal cylinder 5, and the pull rod 2 is driven to move upwards or downwards by the shaft seal cylinder 5.

In this embodiment, a linear bearing 21 is fitted between the pull rod 2 and the housing 1, and the movement of the rod is guided by the linear bearing 21. The bottom of the shaft seal pressing seat 7 is provided with a guide cylinder 72, and the guide cylinder 72 surrounds the pressing boss 71 and is movably sleeved outside the shaft seal seat 6. The guide cylinder 72 can guide the movement of the shaft seal pressing seat 7, so that the movement of the shaft seal pressing seat 7 is more stable, and the sealing ring 8 is effectively pressed.

In this embodiment, the shaft seal cylinder 5 is installed in the housing 1 and located below the ejection cylinder 4, and a piston rod of the shaft seal cylinder 5 faces downward and is connected to the bottom end of the pull rod 2 through a horizontal second connecting rod 51.

In this embodiment, the number of the pull rods 2 is several, specifically two, but is not limited thereto. The two pull rods 2 are distributed in parallel and driven by the same shaft seal cylinder 5.

According to the high-vacuum copper tube shaft seal and ejection device, when the high-vacuum copper tube shaft seal and ejection device works, a product 9 (a high-voltage direct-current relay) is placed on a copper tube cut-off mechanism 10 (the copper tube cut-off mechanism 10 is in the prior art and is irrelevant to the improvement point of the scheme, so that no further description is provided), a copper tube 91 sequentially penetrates through a shaft seal pressing seat 7, a sealing ring 8 and a shaft seal seat 6 to enter an air transmission channel 11 of a shell 1, then a shaft seal air cylinder 5 is started, a pull rod 2 is pulled to move downwards, the pull rod 2 pulls the shaft seal pressing seat 7 to move downwards, a pressing boss 71 of the shaft seal pressing seat 7 enters the shaft seal seat 6 and presses the sealing ring 8, and the sealing ring 8 is pressed to deform to seal a gap between the shaft seal seat 6 and the copper tube 91, so. The gas transmission channel 11 of the shell 1 is connected with a vacuum pump and an air pump through a three-way valve (such as a two-position three-way electromagnetic valve), air in the ceramic cover of the product 10 is pumped away by the vacuum pump through the copper pipe 91 and the gas transmission channel 11, then the vacuum pump is closed, the air pump is started, and inert gas is sent into the ceramic cover of the product through the gas transmission channel 11 and the copper pipe 91 in sequence. After the evacuation and the inert gas filling are completed, the copper tube cutting mechanism 10 is started to cut and seal the copper tube 91, a part of the copper tube remains on the product 10, and the other part remains on the device. After the product is taken away and the copper pipe cutting mechanism 10 is moved away, the shaft seal cylinder 5 is started again to push the pull rod 2 to move upwards, so that the shaft seal pressing seat 7 is pushed to move upwards, and the pressing boss 71 of the shaft seal pressing seat 7 loosens the sealing ring. Then, the ejection cylinder 4 is started to drive the ejector rod 3 to move upwards, so that the other part of the copper pipe left on the device is ejected to be taken out manually.

According to the high-vacuum copper pipe shaft seal and the positioning device, the ejection mechanism is arranged, so that the copper pipe left on the device can be ejected upwards for a certain distance after the copper pipe is cut off, the copper pipe is convenient to take out manually, and the working efficiency is improved. The pull rod adopts linear bearing direction, can guarantee the stability of pull rod motion. The pull rod and the shaft seal pressing seat are locked through the bolt, and the shaft seal pressing seat is guaranteed not to be loosened, so that the sealing performance and stability of the copper pipe shaft seal can be guaranteed, and the leakage probability is reduced.

The above embodiments are only used to further illustrate the high vacuum copper tube shaft seal and the ejection device of the present invention, but the present invention is not limited to the embodiments, and any simple modification, equivalent change and modification made to the above embodiments according to the technical spirit of the present invention fall within the protection scope of the technical solution of the present invention.