CN210859791U

CN210859791U - Sealing structure of vacuum welding furnace

Info

Publication number: CN210859791U
Application number: CN201922084196.8U
Authority: CN
Inventors: 刘照和
Original assignee: Kunshan Jiayuan Haoze Optoelectronics Technology Co ltd
Current assignee: Jiahao Advanced Semiconductor Suzhou Co ltd
Priority date: 2019-11-28
Filing date: 2019-11-28
Publication date: 2020-06-26
Anticipated expiration: 2029-11-28

Abstract

The utility model relates to a vacuum welding stove technical field especially relates to a seal structure of vacuum welding stove, including left side pipe, right side pipe, straight tube part, separation part, an installation section of thick bamboo, closing mechanism, vacuum cavity, welding furnace body, vacuum pump, observation window and base frame, the one end fixed connection relative with left side pipe and right side pipe respectively in the both ends of straight tube part, and the separation part is located the inside left side of left side pipe, the left side of the intraductal lateral wall in left side and the left side fixed connection of separation part lateral wall, the bottom of an installation section of thick bamboo and the fixed intercommunication of intermediate position at straight tube part top. The utility model discloses reached and carried out the purpose that stably keeps to the vacuum state of vacuum welding stove inside, avoided the emergence of air infiltration welding furnace body internal phenomenon to guaranteed the normal operating of whole vacuum welding stove, can not receive the influence of external condition, can avoid the vacuum pump to be in running state's phenomenon always moreover, thereby reduced the energy consumption, reduced the running cost.

Description

Sealing structure of vacuum welding furnace

Technical Field

The utility model relates to a vacuum welding stove technical field especially relates to a seal structure of vacuum welding stove.

Background

With the gradual reduction of the packaging size of electronic components and the gradual increase of the power level, the demand for welding without cavities is generated. Since welding is performed in a low-oxygen or oxygen-free environment, the generation of voids during welding can be reduced and the quality of welding can be improved, and accordingly, it is desirable to perform welding in a low-oxygen or oxygen-free environment. The vacuum welding furnace is a device capable of realizing welding in a low-oxygen or oxygen-free environment. The existing vacuum welding furnace is not provided with a sealing cover generally, so that the vacuum welding furnace can be ensured to be kept in a vacuum state under the action of a vacuumizing device.

However, the vacuum welding furnace needs to be always matched with the operation of the vacuum pump to maintain a vacuum state, once the vacuum pump stops operating, air easily enters the inside of a connecting pipeline and each position of the connecting pipeline, particularly at the pipeline connecting position, air can be slowly mixed due to poor sealing performance between the pipelines, and meanwhile, when the vacuum pump is accidentally damaged, the vacuum environment inside the vacuum furnace cannot be maintained, so that corresponding measures cannot be taken to deal with the sudden phenomenon, the welding quality is reduced, and the vacuum environment requirement inside the vacuum welding furnace cannot be guaranteed.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

The utility model provides a not enough to prior art, the utility model provides a seal structure of vacuum welding stove has reached and has carried out the purpose that stably keeps to the vacuum state of vacuum welding stove inside, has avoided the emergence of air infiltration welding furnace body internal phenomenon to guaranteed the normal operating of whole vacuum welding stove, can not receive the influence of external condition, can avoid the vacuum pump to be in the phenomenon of running state always moreover, thereby reduced the energy consumption, reduced the running cost.

(II) technical scheme

In order to realize the technical problem, the utility model provides a following technical scheme: the utility model provides a seal structure of vacuum welding stove, includes left side pipe, right side pipe, straight tube portion, separation part, installation section of thick bamboo, closing mechanism, vacuum cavity, welding furnace body, vacuum pump, observation window and base frame, the both ends of straight tube portion respectively with the one end fixed connection that left side pipe and right side pipe are relative, the separation part is located the intraductal left side in left side, the left side of the intraductal lateral wall in left side and the left side fixed connection of separation part lateral wall, the bottom of installation section of thick bamboo and the fixed intercommunication of intermediate position at straight tube portion top, closing mechanism is located the inside of installation section of thick bamboo, the top of vacuum cavity and the fixed intercommunication of intermediate position of straight tube portion bottom.

Further, the left side pipe is in a conical pipeline shape, the inner diameter of the left side pipe is twice the inner diameter of the right side of the left side pipe, the left side pipe and the right side pipe are in the same shape and size structure, and the left side pipe and the right side pipe are in a mutually symmetrical distribution state relative to the middle position of the straight pipe portion.

Furthermore, the structural shape of the blocking part is a conical pipeline, the inner diameters of the left end and the right end of the blocking part are respectively centimeter and centimeter, and the size of the blocking part is one half of that of the left pipe.

Furthermore, the left end of the left side pipe is fixedly communicated with one side of the welding furnace body, and the right end of the right side pipe is fixedly communicated with the output end of the vacuum pump.

Further, the closing mechanism includes drum, slider, movable rod, sealed piece and reset spring, the top of drum and the fixed intercommunication of intermediate position at installation section of thick bamboo inner wall top, the slider is located the inside of drum, and the lateral wall of slider and the inside wall sliding connection of drum, the intermediate position fixed connection of one end and the slider bottom of movable rod, the bottom of movable rod extends to the below of drum bottom.

Further, the sealing block is located inside the straight pipe portion, the top of the sealing block is fixedly connected with the bottom of the movable rod, a fitting groove is formed in the left side of the outer side wall of the sealing block, the right end of the blocking portion is in contact with the inner side wall of the fitting groove, the reset spring is sleeved on the outer surface of the cylinder, and the two ends of the reset spring are fixedly connected with the top of the inner wall of the installation cylinder and the top of the sealing block respectively.

Further, the observation window is located the intermediate position in welding furnace body the place ahead, the shape of observation window is the rectangle, the bottom of welding furnace body and vacuum pump all with the top fixed connection of base frame, the bottom of base frame is provided with the rubber shock pad.

(III) advantageous effects

The utility model provides a seal structure of vacuum welding stove possesses following beneficial effect:

1. the utility model is characterized in that the left side pipe, the right side pipe, the straight pipe part and the separation part are arranged and matched with each other through the combination of the four parts, wherein a Venturi tube structure can be formed, in the using process, the vacuum part formed by the whole Venturi tube is positioned in the vacuum cavity, the vacuum tube can absorb the acting force of pressure difference to form the acting force on the sealing block in the sealing mechanism and displace downwards, a smooth pipeline is formed when the right end of the separation part is separated from the laminating groove, the air in the welding furnace body is extracted by the vacuum pump through the pipeline, so that the automatic sealing action is formed on the whole pipeline, the phenomenon that the air permeates into the welding furnace body is avoided, the normal operation of the whole vacuum welding furnace is ensured, the influence of external conditions is avoided, and the phenomenon that the vacuum pump is always in the operating state can be avoided, thereby reducing energy consumption and reducing operation cost.

2. The utility model discloses because the setting of closing mechanism, when the vacuum pump stopped the operation, because lost the adsorption affinity that the vacuum pump provided in the pipeline, sealed piece received the effort that resets that reset spring provided and resumes its initial condition position this moment, separation part and laminating groove form closed this moment, and when the vacuum pump operates, owing to the extraction adsorption affinity that produces, can make whole pipeline internal form effort, form the effort and the displacement downwards to sealed piece this moment, form unobstructed pipeline when the right-hand member of separation part breaks away from with the laminating groove mutually, consequently, the sealing performance to the evacuation operation has been improved, and the steady state of whole pipeline has been guaranteed.

Drawings

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

FIG. 2 is a schematic sectional view of a portion of the structure of the present invention;

fig. 3 is a single schematic view of the structure sealing block of the present invention.

In the figure: 1. a left side tube; 2. a right side tube; 3. a straight tube portion; 4. a blocking portion; 5. mounting the cylinder; 6. a sealing mechanism; 7. a vacuum chamber; 8. welding the furnace body; 9. a vacuum pump; 10. an observation window; 11. a base frame; 61. a cylinder; 62. a slider; 63. a movable rod; 64. a sealing block; 65. a return spring; 66. and fitting the groove.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-3, the present invention provides a technical solution: a sealing structure of a vacuum welding furnace comprises a left side pipe 1, a right side pipe 2, a straight pipe part 3, a blocking part 4, a mounting cylinder 5, a sealing mechanism 6, a vacuum cavity 7, a welding furnace body 8, a vacuum pump 9, an observation window 10 and a base frame 11, wherein two ends of the straight pipe part 3 are respectively fixedly connected with one end of the left side pipe 1 opposite to one end of the right side pipe 2, the blocking part 4 is positioned on the left side inside the left side pipe 1, the left side of the inner side wall of the left side pipe 1 is fixedly connected with the left side of the outer side wall of the blocking part 4, the bottom of the mounting cylinder 5 is fixedly communicated with the middle position of the top of the straight pipe part 3, the sealing mechanism 6 is positioned inside the mounting cylinder 5, the top of the vacuum cavity 7 is fixedly communicated with the middle position of the bottom of the straight pipe part 3, and a Venturi tube structure can be formed by the combination and matching of the four parts due to the, in the use process, the vacuum part formed by the whole Venturi tube is positioned in the vacuum cavity 7, the acting force of differential pressure is absorbed by the vacuum tube at the position, the acting force can be formed on the sealing block 64 in the sealing mechanism 6 and can move downwards, a smooth pipeline is formed when the right end of the separation part 4 is separated from the laminating groove 66, the air in the welding furnace body 8 is extracted by the vacuum pump 9 through the pipeline, therefore, the automatic sealing action is formed on the whole pipeline, the phenomenon that the air permeates into the welding furnace body 8 is avoided, the normal operation of the whole vacuum welding furnace is ensured, the influence of external conditions is avoided, the phenomenon that the vacuum pump 9 is always in the operation state can be avoided, the energy consumption is reduced, and the operation cost is reduced.

The closing mechanism 6 comprises a cylinder 61, a slide block 62, a movable rod 63, a sealing block 64 and a return spring 65, the top of the cylinder 61 is fixedly communicated with the middle position of the top of the inner wall of the installation cylinder 5, the slide block 62 is positioned inside the cylinder 61, the outer side wall of the slide block 62 is in sliding connection with the inner side wall of the cylinder 61, one end of the movable rod 63 is fixedly connected with the middle position of the bottom of the slide block 62, the bottom of the movable rod 63 extends to the lower part of the bottom of the cylinder 61, the sealing block 64 is positioned inside the straight pipe part 3, the top of the sealing block 64 is fixedly connected with the bottom of the movable rod 63, a fitting groove 66 is formed in the left side of the outer side wall of the sealing block 64, the right end of the blocking part 4 is in contact with the inner side wall of the fitting groove 66, the return spring 65 is sleeved on the outer surface of the cylinder 61, two ends of the return spring 65, when the vacuum pump 9 stops operating, because the adsorption affinity that the vacuum pump 9 provided has been lost in the pipeline, the sealed piece 64 receives the reset action that reset spring 65 provided to resume its initial condition position this moment, separation part 4 forms the closure with laminating groove 66 this moment, and when the vacuum pump 9 operates, because the extraction adsorption affinity that produces, can make whole pipeline form the effort, form the effort and the displacement downwards to sealed piece 64 this moment, form unobstructed pipeline when the right-hand member of separation part 4 breaks away from mutually with laminating groove 66, consequently, the sealing performance to the evacuation operation has been improved, and the steady state of whole pipeline has been guaranteed.

The shape of left side pipe 1 is the taper pipe way, the left internal diameter of left side pipe 1 is the twice of right side internal diameter, left side pipe 1 is the same shape size structure with right side pipe 2, left side pipe 1 is mutual symmetric distribution state with right side pipe 2 for the intermediate position of straight tube part 3, the structural shape of separation part 4 is the taper pipe way, the internal diameter at both ends is 10 centimeters and 5 centimeters respectively about separation part 4, the size and dimension of separation part 4 is the half of left side pipe 1, the left end of left side pipe 1 and the fixed intercommunication in one side of welding furnace body 8, the right-hand member of right side pipe 2 and the fixed intercommunication of output of vacuum pump 9, observation window 10 is located the intermediate position in welding furnace body 8 the place ahead, the shape of observation window 10 is the rectangle, the bottom of welding furnace body 8 and vacuum pump 9 all with the top fixed connection of base frame 11, the bottom of base frame 11 is provided with the rubber shock pad.

The working principle is as follows: in the using process, through the combination and matching use of the left side pipe 1, the right side pipe 2, the straight pipe part 3 and the blocking part 4, a Venturi tube structure can be formed, in the using process, when gas or liquid flows in the Venturi tube, the dynamic pressure (speed head) reaches the maximum value at the narrowest part of the pipeline, the static pressure (rest pressure) reaches the minimum value, the speed of the gas (liquid) rises due to the reduction of the cross-sectional area of the through-flow, the whole inrush current is subjected to the pipeline reducing process in the same time, so the pressure is reduced at the same time, and a pressure difference is generated, is used for measuring or providing an external suction force for the fluid, and meanwhile, the vacuum part formed by the whole Venturi tube is positioned in the vacuum cavity 7, and can form an acting force and displace downwards for the sealing block 64 in the closing mechanism 6 by using the acting force of the vacuum tube absorbing the pressure difference, form unobstructed pipeline when the right-hand member of separation part 4 breaks away from mutually with laminating groove 66, the inside air of welding furnace body 8 is extracted by vacuum pump 9 by the pipeline, consequently forms the self-sealing action to whole pipeline, has avoided the emergence of air infiltration welding furnace body 8 internal phenomena to the normal operating of whole vacuum welding stove has been guaranteed.

The utility model discloses a control mode comes automatic control through the controller, and the control circuit of controller can realize through the simple programming of technical staff in this field, and the supply also belongs to the common general knowledge in this field, and the utility model discloses mainly used protects mechanical device, so the utility model discloses no longer explain control mode and circuit connection in detail.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a seal structure of vacuum welding stove, includes left side pipe (1), right side pipe (2), straight tube portion (3), separation part (4), installation section of thick bamboo (5), closing mechanism (6), vacuum cavity (7), welding furnace body (8), vacuum pump (9), observation window (10) and base frame (11), its characterized in that: the utility model discloses a solar energy collector, including straight tube portion (3), separation part (4), right side pipe (2), right side pipe (1), right side pipe (3), right side pipe (2), right side pipe (1), right side pipe (4), the left side of left side pipe (1) inside wall and the left side fixed connection of separation part (4) lateral wall, the bottom of installation section of thick bamboo (5) and the fixed intercommunication of intermediate position at straight tube portion (3) top, closing mechanism (6) are located the inside of installation section of thick bamboo (5), the top of vacuum cavity (7) and the fixed intercommunication of intermediate position of straight tube portion (3) bottom.

2. The sealing structure of a vacuum welding furnace according to claim 1, characterized in that: the left side pipe (1) is a conical pipeline, the inner diameter of the left side pipe (1) is twice of the inner diameter of the right side, the left side pipe (1) and the right side pipe (2) are of the same shape and size structure, and the left side pipe (1) and the right side pipe (2) are in a mutually symmetrical distribution state relative to the middle position of the straight pipe part (3).

3. The sealing structure of a vacuum welding furnace according to claim 1, characterized in that: the structure shape of separation part (4) is the toper pipeline, the internal diameter at both ends is 10 centimeters and 5 centimeters about separation part (4) respectively, the size and the size of separation part (4) are half of left side pipe (1).

4. The sealing structure of a vacuum welding furnace according to claim 1, characterized in that: the left end of the left side pipe (1) is fixedly communicated with one side of the welding furnace body (8), and the right end of the right side pipe (2) is fixedly communicated with the output end of the vacuum pump (9).

5. The sealing structure of a vacuum welding furnace according to claim 1, characterized in that: closing mechanism (6) include drum (61), slider (62), movable rod (63), sealing block (64) and reset spring (65), the top of drum (61) and the fixed intercommunication of intermediate position at installation section of thick bamboo (5) inner wall top, slider (62) are located the inside of drum (61), and the lateral wall of slider (62) and the inside wall sliding connection of drum (61), the intermediate position fixed connection of the one end of movable rod (63) and slider (62) bottom, the bottom of movable rod (63) extends to the below of drum (61) bottom.

6. The sealing structure of a vacuum welding furnace according to claim 5, characterized in that: the sealing block (64) is located inside the straight pipe part (3), the top of the sealing block (64) is fixedly connected with the bottom of the movable rod (63), the left side of the outer side wall of the sealing block (64) is provided with an attaching groove (66), the right end of the blocking part (4) is in contact with the inner side wall of the attaching groove (66), the reset spring (65) is sleeved on the outer surface of the cylinder (61), and the two ends of the reset spring (65) are respectively fixedly connected with the top of the inner wall of the installation cylinder (5) and the top of the sealing block (64).

7. The sealing structure of a vacuum welding furnace according to claim 1, characterized in that: observation window (10) are located the intermediate position in welding furnace body (8) the place ahead, the shape of observation window (10) is the rectangle, the bottom of welding furnace body (8) and vacuum pump (9) all with the top fixed connection of base frame (11), the bottom of base frame (11) is provided with the rubber shock pad.