CN215966761U

CN215966761U - Automatic locking type vacuum cabin

Info

Publication number: CN215966761U
Application number: CN202122664359.7U
Authority: CN
Inventors: 许建国
Original assignee: Chengdu Gongyiyuan Vacuum Equipment Co ltd
Current assignee: Chengdu Gongyiyuan Vacuum Equipment Co ltd
Priority date: 2021-11-02
Filing date: 2021-11-02
Publication date: 2022-03-08
Anticipated expiration: 2031-11-02

Abstract

The application discloses an automatic locking type vacuum chamber, which comprises a chamber body, a sealing cover arranged on the chamber body, and a plurality of groups of pre-locking devices and locking devices for locking the sealing cover; the pre-locking device comprises a second telescopic cylinder arranged on the side wall of the cabin body, the telescopic end of the second telescopic cylinder is connected with a tensioning seat, the top of the tensioning seat is hinged with a tensioning ring, and the side wall of the sealing cover is provided with a limiting seat matched with the tensioning ring; the locking device comprises a fixed seat arranged on the side wall of the cabin body, a first telescopic cylinder is arranged on one side, away from the cabin body, of the fixed seat, a locking hole is formed in the side wall of the sealing cover, and the telescopic end of the first telescopic cylinder can movably penetrate through the fixed seat and stretch into the locking hole.

Description

Automatic locking type vacuum cabin

Technical Field

The application relates to the technical field of vacuum cabins, in particular to an automatic locking type vacuum cabin.

Background

Vacuum reflow soldering, also called vacuum/controlled atmosphere eutectic furnace, has large thermal capacity and extremely small temperature difference of PCB surface, and is widely applied to the fields of Europe and America aviation, aerospace, military industry and electronics and the like. The infrared radiation heating principle is adopted, the welding machine has the characteristics of uniform and consistent temperature, ultralow-temperature safe welding, no temperature difference, no overheating, reliable and stable process parameters, no need of complex process tests, low environmental protection cost operation and the like, and meets the requirements of military products on various welding, small-batch welding and high reliability.

Vacuum reflow soldering's main part is the vacuum chamber, and when the vacuum chamber fills positive pressure toward the under-deck in the use, need guarantee the leakproofness of vacuum chamber to vacuum chamber locking, and no matter adopt manual or automatic locking structure at present, because the existence of the inside atmospheric pressure of vacuum chamber, sealed lid has certain clearance with the cabin body all the time, and the location is inaccurate when having sealed locking and leads to the not firm problem of locking, influences the normal use of vacuum chamber.

SUMMERY OF THE UTILITY MODEL

The main aim at of this application provides an automatic locking formula vacuum chamber, aims at solving the technical problem that the location is inaccurate and leads to locking not firm when current vacuum chamber seals locking.

In order to achieve the above object, the present application provides an automatic locking type vacuum chamber, which includes a chamber body, a sealing cover disposed on the chamber body, and a plurality of sets of pre-locking devices and locking devices for locking the sealing cover; the pre-locking device comprises a second telescopic cylinder arranged on the side wall of the cabin body, the telescopic end of the second telescopic cylinder is connected with a tensioning seat, the top of the tensioning seat is hinged with a tensioning ring, and the side wall of the sealing cover is provided with a limiting seat matched with the tensioning ring; the locking device comprises a fixed seat arranged on the side wall of the cabin body, a first telescopic cylinder is arranged on one side, away from the cabin body, of the fixed seat, a locking hole is formed in the side wall of the sealing cover, and a telescopic end of the first telescopic cylinder can movably penetrate through the fixed seat and stretch into the locking hole.

Optionally, one end of the limiting seat, which is far away from the second telescopic cylinder, is provided with a limiting groove, and the tensioning ring can be sleeved in the limiting groove.

Optionally, the top of the cabin is connected with a vacuum flapper valve, the vacuum flapper valve is connected with a gas charging pipe, the gas charging pipe is connected with a combustion discharge pipe, and the combustion discharge pipe is used for discharging combustion gas.

Optionally, the gas charge pipe comprises a main pipe connected between the vacuum flapper valve and the combustion exhaust pipe, the main pipe being connected to a nitrogen inlet pipe.

Optionally, the combustion discharge pipe comprises a bellows connected to the main pipe, the bellows being connected to an elbow pipe.

Optionally, the top of the sealing cover is provided with a viewing window.

Optionally, the bottom of the cabin is provided with at least four casters.

Optionally, a push-pull handle is attached to one end of the seal cap.

Optionally, the push-pull handle comprises two connecting pieces detachably connected to two side ends of the sealing cover respectively, and a cross shaft is connected between the two connecting pieces.

Optionally, the side walls of the cabin are provided with access doors.

The beneficial effect that this application can realize is as follows:

this application is through the setting of pre-locking device, the second telescoping cylinder can drive taut seat and be close to spacing seat certain distance, then manual detain the taut ring on spacing seat, the second telescoping cylinder shortens to drive taut seat and keeps away from spacing seat, make taut ring firmly taut on spacing seat, thereby there is a pre-tensioned effect to sealed lid, then the telescoping cylinder of first telescoping cylinder can stretch into the locking hole of sealed lid smoothly, realize effective locking, prevent that sealed lid from having the problem that the flexible terminal pair of lockhole and first telescoping cylinder is inaccurate because the atmospheric pressure relation has certain clearance on the cabin body, thereby realize carrying out locking effect in advance to sealed lid, accurate positioning when being convenient for follow-up locking device locks, it is firm to lock, thereby guarantee vacuum chamber normal use.

Drawings

In order to more clearly illustrate the detailed description of the present application or the technical solutions in the prior art, the drawings that are needed in the detailed description of the present application or the technical solutions in the prior art will be briefly described below. Throughout the drawings, like elements or portions are generally identified by like reference numerals. In the drawings, elements or portions are not necessarily drawn to scale.

FIG. 1 is a schematic structural view of an automatic locking vacuum chamber according to the present application;

FIG. 2 is a schematic structural diagram of a pre-lock apparatus according to an embodiment of the present application;

FIG. 3 is a schematic view of a seal cap according to an embodiment of the present application;

FIG. 4 is a schematic view of the connection of the vacuum flapper valve, gas charge pipe and combustion exhaust pipe in an embodiment of the present application.

Reference numerals:

110-cabin body, 120-sealing cover, 121-locking hole, 130-locking device, 131-fixing seat, 132-first telescopic cylinder, 140-pre-locking device, 140-second telescopic cylinder, 142-tensioning seat, 143-tensioning ring, 144-limiting seat, 1441-limiting groove, 150-vacuum baffle valve, 160-gas filling pipe, 161-main pipe, 162-nitrogen gas access pipe, 170-combustion discharge pipe, 171-corrugated pipe, 172-elbow pipe, 180-observation window, 190-movable caster, 210-push-pull handle, 211-connecting piece, 212-cross shaft and 220-access door.

The implementation, functional features and advantages of the objectives of the present application will be further explained with reference to the accompanying drawings.

Detailed Description

The technical solutions in the embodiments of the present application will be described clearly and completely with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

It should be noted that all the directional indications (such as up, down, left, right, front, and back … …) in the embodiment of the present application are only used to explain the relative position relationship between the components, the motion situation, and the like in a specific posture, and if the specific posture is changed, the directional indication is changed accordingly.

In this application, unless expressly stated or limited otherwise, the terms "connected," "secured," and the like are to be construed broadly, and for example, "secured" may be a fixed connection, a removable connection, or an integral part; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

In addition, if there is a description of "first", "second", etc. in the embodiments of the present application, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, the meaning of "and/or" appearing throughout includes three juxtapositions, exemplified by "A and/or B" including either A or B or both A and B. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present application.

Examples

Referring to fig. 1 to 4, the embodiment provides an automatic locking type vacuum chamber, which includes a chamber body 110, a sealing cover 120 disposed on the chamber body 110, and a plurality of sets of pre-locking devices 140 and locking devices 130 for locking the sealing cover 120; the pre-locking device 140 comprises a second telescopic cylinder 140 arranged on the side wall of the cabin body 110, the telescopic end of the second telescopic cylinder 140 is connected with a tensioning seat 142, the top of the tensioning seat 142 is hinged with a tensioning ring 143, and the side wall of the sealing cover 120 is provided with a limiting seat 144 matched with the tensioning ring 143; the locking device 130 includes a fixing base 131 disposed on the sidewall of the cabin 110, a first telescopic cylinder 132 is disposed on a surface of the fixing base 131 far away from the cabin 110, a locking hole 121 is disposed on the sidewall of the sealing cover 120, and a telescopic end of the first telescopic cylinder 132 movably penetrates through the fixing base 131 and extends into the locking hole 121.

In this embodiment, through the arrangement of the pre-locking device 140, the second telescoping cylinder 140 can drive the tensioning seat 142 to be close to the limiting seat 144 by a certain distance, and then manually buckle the tensioning ring 143 on the limiting seat 144, the second telescoping cylinder 140 shortens to drive the tensioning seat 142 to be far away from the limiting seat 144, so that the tensioning ring 143 is firmly tensioned on the limiting seat 144, thereby having a pre-tensioning effect on the sealing cover 120, and then the telescoping cylinder of the first telescoping cylinder 132 can smoothly extend into the locking hole 121 of the sealing cover 120, thereby achieving effective locking, preventing the problem that the locking hole is not aligned with the telescoping end of the first telescoping cylinder 132 due to a certain gap in the air pressure relationship on the cabin body 110 of the sealing cover 120, thereby achieving the pre-locking effect on the sealing cover 120, facilitating accurate positioning when the subsequent locking device 130 is locked, and achieving firm locking, thereby ensuring normal use of the vacuum cabin. Meanwhile, the arrangement of the pre-locking device 140 further improves the locking force of the sealing cover 120, and after the sealing, the positive pressure in the cabin can reach the locking capacity of 1000-500000 PA.

It should be noted that the first telescopic cylinder 132 and the second telescopic cylinder 140 can be controlled by an upper computer or a PLC controller, and full-automatic control can be realized during locking and unlocking operations, and the stroke is reliable and the control is accurate. In addition, according to the different specifications and the different appearance structures of the vacuum chamber, the number of the pre-locking devices 140 and the number of the locking devices 130 are specifically set, for example, a rectangular vacuum chamber can be provided with a group of locking devices 130 at the corresponding four corners, and a group of pre-locking devices 140 are arranged between the adjacent locking devices 130, so that the stress is uniform and the sealing is reliable. The telescopic ends of the first telescopic cylinder 132 and the second telescopic cylinder 140 are piston rods, and the first telescopic cylinder 132 and the second telescopic cylinder 140 may be replaced by an air cylinder, a hydraulic cylinder, or an electric cylinder, or other parts capable of achieving the telescopic function, such as an electric push rod.

Optionally, a limit groove 1441 is formed in one end of the limit seat 144, which is away from the second telescopic cylinder 140, and the tightening ring 143 can be sleeved in the limit groove 1441. When the pre-locking mechanism is used for pre-locking, the tensioning ring 143 is firstly sleeved in the limit groove 1441, and the second telescopic cylinder 140 contracts, so that the tensioning ring 143 is tensioned in the limit groove 1441, and the tensioning ring 143 is prevented from being separated from the limit seat 144.

Optionally, a vacuum flapper valve 150 is connected to the top of the chamber 110, a gas charging pipe 160 is connected to the vacuum flapper valve 150, a combustion exhaust pipe 170 is connected to the gas charging pipe 160, and the combustion exhaust pipe 170 is used to exhaust the combustion gas. The gas charge tube 160 includes a main tube 161 connected between the vacuum flapper valve 150 and the combustion exhaust tube 170, the main tube 161 being connected to a nitrogen inlet tube 162. The combustion discharge pipe 170 includes a bellows 171 connected to the main pipe 161, and the bellows 171 is connected to an elbow pipe 172.

In this embodiment, the nitrogen inlet pipe 162 is used for connecting a nitrogen storage bottle (not shown in the drawings), the elbow pipe 172 is used for connecting a gas combustion device (not shown in the drawings), when the vacuum flapper valve 150 is in a closed state, the nitrogen storage bottle is connected to the nitrogen inlet pipe 162 so as to introduce nitrogen into the main pipe 161, and the nitrogen is used for cleaning and discharging air in the combustion exhaust pipe 170, thereby ensuring the safety of the subsequent combustion treatment, after the air in the combustion exhaust pipe 170 is discharged, the nitrogen charging is stopped, the vacuum flapper valve 150 is opened, so that the reduced combustible gas in the cabin 110 is discharged into the gas combustion device from the main pipe 161, the bellows 171 and the elbow pipe 172 in sequence for combustion treatment, wherein the bellows 171 has a telescopic function, the length of which can be adaptively adjusted, thereby being capable of adjusting the corresponding installation position according to the installation environment, and improving the universality, the gas combustion device is connected through the elbow pipe 172, so that the gas combustion apparatus can be maintained in a vertical state to accommodate the vertical state of the combustion flame.

Optionally, the top of the sealing cover 120 is provided with an observation window 180, the observation window 180 may adopt a flange structure, and the observation window 180 may adopt a transparent quartz material, so as to facilitate observation of the internal condition of the cabin 110.

Optionally, the bottom of the chamber 110 is provided with at least four casters 190 for moving the whole vacuum chamber. The movable caster 190 can be self-locking and adjustable in lifting, and various use scenes are met.

Optionally, a push-pull handle 210 is connected to one end of the sealing cover 120, and the entire vacuum chamber can be moved by pushing or pulling the push-pull handle 210.

Optionally, the push-pull handle 210 includes two connecting members 211 detachably connected to both side ends of the sealing cover 120, respectively, a horizontal shaft 212 is connected between the two connecting members 211, the horizontal shaft 212 is used for being held by hand, and the connecting members 211 can be connected to the side ends of the sealing cover 120 by screws for easy detachment and assembly.

As an optional implementation manner, the sidewall of the cabin 110 is provided with an access door 220, the access door 220 is detachably connected to the corresponding position of the cabin 110 through screws, and the access door 220 can be set at different positions with different numbers according to the type of the vacuum chamber, so that the access door 220 can be opened to access the inside of the cabin 110.

The above description is only a preferred embodiment of the present application, and not intended to limit the scope of the present application, and all modifications of equivalent structures and equivalent processes, which are made by the contents of the specification and the drawings of the present application, or which are directly or indirectly applied to other related technical fields, are included in the scope of the present application.

Claims

1. An automatic locking type vacuum chamber is characterized by comprising a chamber body, a sealing cover arranged on the chamber body, and a plurality of groups of pre-locking devices and locking devices for locking the sealing cover; wherein the content of the first and second substances,

the pre-locking device comprises a second telescopic cylinder arranged on the side wall of the cabin body, the telescopic end of the second telescopic cylinder is connected with a tensioning seat, the top of the tensioning seat is hinged with a tensioning ring, and the side wall of the sealing cover is provided with a limiting seat matched with the tensioning ring;

the locking device comprises a fixed seat arranged on the side wall of the cabin body, a first telescopic cylinder is arranged on one surface, far away from the cabin body, of the fixed seat, a locking hole is formed in the side wall of the sealing cover, and the telescopic end of the first telescopic cylinder can movably penetrate through the fixed seat and stretch into the locking hole.

2. The auto-locking vacuum chamber of claim 1, wherein a limiting groove is formed at an end of the limiting seat away from the second telescopic cylinder, and the tightening ring can be sleeved in the limiting groove.

3. The self-locking vacuum chamber of claim 1, wherein a vacuum flapper valve is attached to the top of the chamber, and wherein a gas charging pipe is attached to the vacuum flapper valve, and wherein a combustion exhaust pipe is attached to the gas charging pipe, and wherein the combustion exhaust pipe is adapted to exhaust combustion gases.

4. The self-locking vacuum chamber of claim 3, wherein the gas charge tube comprises a main tube connected between the vacuum flapper valve and the combustion exhaust tube, the main tube being connected to a nitrogen inlet tube.

5. The self-locking vacuum chamber of claim 4, wherein the combustion exhaust pipe comprises a bellows connected to the main pipe, the bellows having an elbow pipe connected thereto.

6. The self-locking vacuum chamber as claimed in claim 1, wherein the sealing cover is provided with a viewing window at the top.

7. The self-locking vacuum chamber of claim 1, wherein the bottom of the chamber is provided with at least four casters.

8. The self-locking vacuum chamber of claim 7, wherein a push-pull handle is attached to one end of the sealing lid.

9. The self-locking vacuum chamber of claim 8, wherein the push-pull handle comprises two connecting members detachably connected to both side ends of the sealing cover, respectively, and a cross shaft is connected between the two connecting members.

10. The self-locking vacuum chamber of any one of claims 1-9, wherein the side walls of the chamber are provided with access doors.