CN114199416A

CN114199416A - Vacuum packaging device

Info

Publication number: CN114199416A
Application number: CN202210012059.7A
Authority: CN
Inventors: 吴廷兵; 喻立川
Original assignee: Chongqing Silian Measure & Control Technology Co ltd
Current assignee: Chongqing Silian Measure & Control Technology Co ltd
Priority date: 2022-01-07
Filing date: 2022-01-07
Publication date: 2022-03-18

Abstract

The invention relates to the technical field of absolute pressure sensor vacuum packaging devices, in particular to a vacuum packaging device which comprises a rack, a vacuumizing device, a sealing box and a control device, wherein a sealing door is arranged on the front surface of the sealing box, a sealing cavity is arranged in the sealing box, a plurality of groups of pressing structures are arranged in the sealing cavity, a plurality of vacuum gauges are arranged at the top of the sealing box, the vacuumizing device is used for vacuumizing the sealing cavity, and the vacuum gauges are used for monitoring the vacuum degree in the sealing cavity; when the device is used, the sealing door is opened, the absolute pressure sensor and the steel balls are placed in the sealing cavity, the sealing door is closed, the control device is used for vacuumizing the cavity of the sealing cavity by controlling the vacuumizing device, the vacuum degree in the sealing cavity is detected by a plurality of vacuum timing devices, and the steel balls are pressed and packaged into the absolute pressure sensor through the pressing structure; the invention has good vacuum packaging effect, improves the production qualification rate of the absolute pressure sensor and shortens the production period of the absolute pressure sensor.

Description

Vacuum packaging device

Technical Field

The invention relates to the technical field of absolute pressure sensor vacuum packaging devices, in particular to a vacuum packaging device.

Background

In the production process of the absolute pressure sensor, steel balls need to be pressed and packaged into the absolute pressure sensor in a vacuum environment, however, the existing absolute pressure sensor vacuum packaging device has the following problems: firstly, most of the existing vacuum packaging devices adopt an air cylinder to complete vacuum packaging, and because a piston rod of the air cylinder is unstable in stretching in a vacuum environment, air leakage is easy to occur, so that the vacuum environment is damaged, and the vacuum packaging effect of an absolute pressure sensor is seriously influenced; secondly, the spherical steel balls are difficult to accurately press into the absolute pressure sensor in a vacuum environment, so that the production yield of the existing absolute pressure sensor is extremely low; thirdly, most of the existing vacuum packaging devices are only provided with one vacuum pump for vacuum pumping, so that the time consumption of the vacuum pumping process is long, the required vacuum degree is difficult to achieve, and the production period of the absolute pressure sensor is prolonged.

Disclosure of Invention

The invention aims to overcome the defects and provide the vacuum packaging device which has a good vacuum packaging effect, improves the production yield of the absolute pressure sensor and shortens the production period of the absolute pressure sensor.

In order to achieve the purpose, the invention adopts the following technical scheme:

the utility model provides a vacuum packaging device, includes the frame, set up in evacuating device, seal box and controlling means in the frame, the front of seal box is provided with the sealing door, be provided with sealed chamber in the seal box, sealed intracavity is provided with multiunit pressfitting structure, the top of seal box is provided with a plurality of vacuometers, evacuating device is used for giving sealed chamber evacuation, and the vacuometer is used for monitoring the vacuum in the sealed chamber, evacuating device, pressfitting structure and the equal electric connection of vacuometer controlling means.

Furthermore, the lamination structure is provided with two sets, and the two sets of lamination structure is adjacent to be set up.

Furthermore, the pressing structure comprises a pressing cylinder vertically arranged at the top of the sealing box and a pressing fixture fixed at the bottom of the sealing cavity, the bottom end of the cylinder body of the pressing cylinder extends into the sealing cavity, the rod head of the piston rod of the pressing cylinder vertically extends downwards to be in driving connection with a pressing seat, a piston rod of the pressing cylinder is sleeved with a corrugated pipe, the top end and the bottom end of the corrugated pipe are respectively connected with the bottom end of the cylinder body of the pressing cylinder and the pressing seat, and a permanent magnet pressing head is arranged at the bottom of the pressing seat.

Further, the pressing fixture comprises an upper limiting plate and a lower limiting plate which are arranged oppositely from top to bottom, a plurality of connecting rods used for connecting the upper limiting plate and the lower limiting plate, a fixture base fixed at the bottom of the sealed cavity, and a sliding groove arranged on the fixture base, wherein the bottom end of the lower limiting plate is connected in the sliding groove in a sliding manner, a limiting through groove is vertically formed in the upper limiting plate, and a limiting groove is arranged on the lower limiting plate opposite to the limiting through groove; and a circular adsorption groove used for adsorbing the steel balls is formed in the bottom of the permanent magnet pressure head.

Furthermore, the vacuumizing device comprises a diffusion pump, a mechanical pump, a first connecting pipe, a second connecting pipe and a third connecting pipe, the third connecting pipe is used for communicating the air inlet end and the sealing cavity of the diffusion pump, the second connecting pipe is used for communicating the air inlet end of the mechanical pump with the third connecting pipe, the first connecting pipe is used for communicating the air outlet end of the diffusion pump with the second connecting pipe, a first one-way electric valve, a second one-way electric valve and a third one-way electric valve are respectively arranged on the first connecting pipe, the second connecting pipe and the third connecting pipe, and the first one-way electric valve, the second one-way electric valve and the third one-way electric valve are electrically connected with the control device.

Furthermore, a temperature sensing sensor is arranged on the mechanical pump, a mechanical pump heat dissipation device is also arranged on one side of the rack, and the temperature sensing sensor and the mechanical pump heat dissipation device are both electrically connected with the control device; the bottom of the diffusion pump is provided with a diffusion pump heat dissipation device, and the diffusion pump heat dissipation device is used for dissipating heat of the diffusion pump.

Further, controlling means includes the control box, from top to bottom set gradually in positive display of control box and control button locate controller in the control box locates the warning light at control box top, the equal electric connection of display, control button and warning light the controller.

The invention has the beneficial effects that:

according to the technical scheme, the invention has the beneficial effects that: when the device is used, the sealing door is opened, the absolute pressure sensor and the steel balls are placed in the sealing cavity, the sealing door is closed, the control device is used for vacuumizing the cavity of the sealing cavity by controlling the vacuumizing device, the vacuum degree in the sealing cavity is detected by a plurality of vacuum timing devices, and the steel balls are pressed and packaged into the absolute pressure sensor through the pressing structure; the invention has good vacuum packaging effect, improves the production qualification rate of the absolute pressure sensor and shortens the production period of the absolute pressure sensor.

Drawings

In order to more clearly illustrate the detailed description of the invention or the technical solutions in the prior art, the drawings that are needed in the detailed description of the invention or 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 view of the overall structure of the present invention;

FIG. 2 is a front view of the present invention;

FIG. 3 is a top view of the present invention;

FIG. 4 is a schematic structural view of a press-fit structure according to the present invention;

FIG. 5 is an enlarged view of a portion of FIG. 4 at A;

FIG. 6 is a schematic view of the structure of the vacuum extractor of the present invention;

reference numerals: a frame 1; a vacuum pumping device 2; a diffusion pump 21; a mechanical pump 22; a first connecting pipe 23; a first one-way electric valve 231; a second connecting pipe 24; a second one-way electric valve 241; a third connection pipe 25; a third one-way electric valve 251; a seal box 3; a control device 4; a sealing door 31; a sealed cavity 32; a control device 4; a press-fit structure 5; a press-fit cylinder 51; a press-fit jig 52; an upper limiting plate 521; a limiting through groove 5211; a lower limiting plate 522; a limit groove 5221; a connecting rod 523; a clamp base 524; a chute 5241; a press-fit seat 53; a bellows 54; a permanent magnet ram 55; a vacuum gauge 6; a mechanical pump heat sink 7; a diffusion pump heat sink 8.

Detailed Description

Referring to fig. 1, 2, 3, 4, 5, and 6, the present embodiment provides a vacuum packaging apparatus, including a frame 1, a vacuum pumping apparatus 2, a seal box 3, and a control apparatus 4 disposed on the frame 1, a seal door 31 is disposed on a front surface of the seal box 3, a seal cavity 32 is disposed in the seal box 3, a plurality of sets of press-fit structures 5 are disposed in the seal cavity 32, a plurality of vacuum gauges 6 are disposed on a top portion of the seal box 3, the vacuum pumping apparatus 2 is configured to pump vacuum to the seal cavity 32, the vacuum gauges 6 are configured to monitor a vacuum degree in the seal cavity 32, and the vacuum pumping apparatus 2, the press-fit structures 5, and the vacuum gauges 6 are all electrically connected to the control apparatus 4.

When the device is used, the sealing door 31 is opened, the absolute pressure sensor and the steel balls are placed in the sealing cavity 32, the sealing door 31 is closed, the control device 4 is used for vacuumizing the cavity of the sealing cavity 32 by controlling the vacuumizing device 2, the vacuum degree in the sealing cavity 32 is detected by the plurality of vacuum meters 6 at any time, and the steel balls are pressed and packaged into the absolute pressure sensor through the pressing structure 5; the invention has good vacuum packaging effect, improves the production qualification rate of the absolute pressure sensor and shortens the production period of the absolute pressure sensor.

Referring to fig. 1, 2, 3, 4, 5 and 6, two sets of the pressing structures 5 are provided, and the two sets of the pressing structures 5 are arranged adjacently; in this embodiment, through setting up two sets of pressfitting structures 5, can be in two absolute pressure sensor of pressfitting after evacuating device 2 evacuation, the pressfitting efficiency is higher.

Referring to fig. 1, 2, 3, 4, 5 and 6, the press-fit structure 5 includes a press-fit cylinder 51 vertically disposed at the top of the seal box 3, and a press-fit clamp 52 fixed at the bottom of the seal cavity 32, a bottom end of a cylinder body of the press-fit cylinder 51 extends into the seal cavity 32, a rod head of a piston rod of the press-fit cylinder 51 vertically extends downward to be drivingly connected with a press-fit seat 53, a piston rod of the press-fit cylinder 51 is sleeved with a corrugated tube 54, a top end and a bottom end of the corrugated tube 54 are respectively connected with the bottom end of the cylinder body of the press-fit cylinder 51 and the press-fit seat 53, and a permanent magnet press head 55 is disposed at the bottom of the press-fit seat 53; in the embodiment, the absolute pressure sensor is placed on the pressing fixture 52, the steel balls are adsorbed by the permanent magnet pressure head 55, the piston rod of the pressing cylinder 51 extends downwards to drive the pressing seat 53 to move downwards, and the corrugated pipe 54 is stretched at the same time, so that the steel balls can be pressed and packaged into the absolute pressure sensor; the cylinder body bottom end and the pressing seat 53 of the pressing air cylinder 51 are respectively connected with the top end and the bottom end of the corrugated pipe 54, the vacuum environment caused by the expansion and contraction of the piston rod of the pressing air cylinder 51 can be effectively prevented from being damaged, the pressing of the pressing air cylinder 51 is more stable and reliable, the vacuum packaging effect is good, and the production yield of the absolute pressure sensor is improved.

Referring to fig. 1, 2, 3, 4, 5 and 6, the pressing fixture 52 includes an upper limiting plate 521 and a lower limiting plate 522 which are disposed opposite to each other in an up-and-down manner, a plurality of connecting rods 523 used for connecting the upper limiting plate 521 and the lower limiting plate 522, a fixture base 524 fixed at the bottom of the sealed cavity 32, a chute 5241 disposed on the fixture base 524, the bottom end of the lower limiting plate 522 is slidably connected in the chute 5241, a limiting through groove 5211 is vertically disposed on the upper limiting plate 521, and a limiting groove 5221 is disposed on the lower limiting plate 522 opposite to the limiting through groove 5211; the bottom of the permanent magnet pressure head 55 is provided with a circular adsorption groove used for adsorbing steel balls; in this embodiment, the absolute pressure sensor is placed into the limiting through groove 5211 on the upper limiting plate 521 until the bottom end of the absolute pressure sensor abuts against the limiting groove 5221, so that the absolute pressure sensor can be limited, and the absolute pressure sensor is prevented from slipping in the pressing process; through the bottom sliding connection spout 5241 of lower limiting plate 522, be convenient for put into or take out absolute pressure sensor from sealed chamber 32, adsorb the steel ball through circular absorption recess, the pressfitting counterpoint is more accurate.

Referring to fig. 1, 2, 3, 4, 5 and 6, the vacuum pumping device 2 includes a diffusion pump 21, a mechanical pump 22, a first connection pipe 23, a second connection pipe 24 and a third connection pipe 25, the third connection pipe 25 is used for communicating an air inlet of the diffusion pump 21 with a sealed cavity 32, the second connection pipe 24 is used for communicating an air inlet of the mechanical pump 22 with the third connection pipe 25, the first connection pipe 23 is used for communicating an air outlet of the diffusion pump 21 with the second connection pipe 24, the first connection pipe 23, the second connection pipe 24 and the third connection pipe 25 are respectively provided with a first one-way electric valve 231, a second one-way electric valve 241 and a third one-way electric valve 251, and the first one-way electric valve 231, the second one-way electric valve 241 and the third one-way electric valve 251 are all electrically connected to the control device 4; in the embodiment, the diffusion pump 21 and the mechanical pump 22 are arranged to vacuumize the sealed cavity 32 together, so that the vacuumizing speed is higher; the first, second and

third connection pipes

23, 24 and 25 are controlled to be opened or closed by the first, second and third one-way

electric valves

231, 241 and 251.

Referring to fig. 1, 2, 3, 4, 5 and 6, a temperature sensor is disposed on the mechanical pump 22, a mechanical pump heat sink 7 is further disposed on one side of the rack 1, and both the temperature sensor and the mechanical pump heat sink 7 are electrically connected to the control device 4; the bottom of the diffusion pump 21 is provided with a diffusion pump heat dissipation device 8, and the diffusion pump heat dissipation device 8 is used for dissipating heat of the diffusion pump 21; in this embodiment, the temperature of the mechanical pump 22 is monitored constantly by the temperature sensor, and when the temperature of the mechanical pump 22 is too high, the mechanical pump heat sink 7 automatically dissipates heat to the mechanical pump 22; the diffusion pump 21 is radiated by the diffusion pump radiating device 8, and the use is safer and more reliable.

Referring to fig. 1, 2, 3, 4, 5 and 6, the control device 4 includes a control box, a display and a control button sequentially disposed on a front surface of the control box from top to bottom, a controller disposed in the control box, and a warning light disposed on a top of the control box, wherein the display, the control button and the warning light are all electrically connected to the controller; in this embodiment, the control content is input through the control button, the vacuum pumping device 2, the pressing structure 5 and the vacuum gauge 6 are controlled through the controller, the control content input through the control button is displayed through the display, and the content controlled by the controller is displayed.

The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions for the described embodiments may be made by those skilled in the art without departing from the scope and spirit of the invention as defined by the accompanying claims.

Claims

1. A vacuum packaging apparatus, characterized in that: including frame (1), set up in evacuating device (2), seal box (3) and controlling means (4) on frame (1), the front of seal box (3) is provided with sealing door (31), be provided with sealed chamber (32) in seal box (3), be provided with multiunit pressfitting structure (5) in sealed chamber (32), the top of seal box (3) is provided with a plurality of vacuometers (6), evacuating device (2) are used for sealed chamber (32) evacuation, and vacuometer (6) are used for monitoring the vacuum in sealed chamber (32), evacuating device (2), pressfitting structure (5) and the equal electric connection of vacuometer (6) controlling means (4).

2. The vacuum packaging apparatus according to claim 1, wherein: the press-fit structures (5) are arranged in two groups, and the two groups of press-fit structures (5) are arranged adjacently.

3. A vacuum packaging apparatus as claimed in claim 2, wherein: the pressing structure (5) comprises a pressing cylinder (51) vertically arranged at the top of the seal box (3) and a pressing fixture (52) fixed at the bottom of the seal cavity (32), the bottom end of the pressing cylinder (51) extends into the seal cavity (32), a piston rod head of the pressing cylinder (51) vertically extends downwards to drive and is connected with a pressing seat (53), a piston rod of the pressing cylinder (51) is sleeved with a corrugated pipe (54), the top end and the bottom end of the corrugated pipe (54) are respectively connected with the bottom end of the pressing cylinder (51) and the pressing seat (53), and a permanent magnet pressure head (55) is arranged at the bottom of the pressing seat (53).

4. A vacuum packaging apparatus as claimed in claim 3, wherein: the pressing clamp (52) comprises an upper limiting plate (521) and a lower limiting plate (522) which are arranged vertically in a right-to-left mode, a plurality of connecting rods (523) used for connecting the upper limiting plate (521) and the lower limiting plate (522), a clamp base (524) fixed at the bottom of the sealed cavity (32), a sliding groove (5241) arranged on the clamp base (524), the bottom end of the lower limiting plate (522) is connected in the sliding groove (5241) in a sliding mode, a limiting through groove (5211) is vertically formed in the upper limiting plate (521), and a limiting groove (5221) is formed in the lower limiting plate (522) in a right-to-side mode with the limiting through groove (5211); and a circular adsorption groove used for adsorbing the steel balls is formed in the bottom of the permanent magnet pressure head (55).

5. The vacuum packaging apparatus according to claim 1, wherein: the vacuum-pumping device (2) comprises a diffusion pump (21), a mechanical pump (22), a first connecting pipe (23), a second connecting pipe (24) and a third connecting pipe (25), the third connecting pipe (25) is used for communicating the air inlet end of the diffusion pump (21) with the sealed cavity (32), the second connecting pipe (24) is used for communicating the air inlet end of the mechanical pump (22) with a third connecting pipe (25), the first connecting pipe (23) is used for communicating the air outlet end of the diffusion pump (21) with the second connecting pipe (24), a first one-way electric valve (231), a second one-way electric valve (241) and a third one-way electric valve (251) are respectively arranged on the first connecting pipe (23), the second connecting pipe (24) and the third connecting pipe (25), the first one-way electric valve (231), the second one-way electric valve (241) and the third one-way electric valve (251) are all electrically connected with the control device (4).

6. The vacuum packaging apparatus according to claim 5, wherein: a temperature sensing sensor is arranged on the mechanical pump (22), a mechanical pump heat dissipation device (7) is further arranged on one side of the rack (1), and the temperature sensing sensor and the mechanical pump heat dissipation device (7) are both electrically connected with the control device (4); the bottom of diffusion pump (21) is provided with diffusion pump heat abstractor (8), diffusion pump heat abstractor (8) are used for giving diffusion pump (21) heat dissipation.

7. The vacuum packaging apparatus according to claim 1, wherein: controlling means (4) include the control box, from top to bottom set gradually in positive display of control box and control button locate controller in the control box locates the warning light at control box top, the equal electric connection of display, control button and warning light the controller.