CN201120958Y - Negative pressure switch of vacuum packaging machine - Google Patents
Negative pressure switch of vacuum packaging machine Download PDFInfo
- Publication number
- CN201120958Y CN201120958Y CNU2007200424377U CN200720042437U CN201120958Y CN 201120958 Y CN201120958 Y CN 201120958Y CN U2007200424377 U CNU2007200424377 U CN U2007200424377U CN 200720042437 U CN200720042437 U CN 200720042437U CN 201120958 Y CN201120958 Y CN 201120958Y
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- CN
- China
- Prior art keywords
- air chamber
- negative pressure
- pressure switch
- lower cover
- loam cake
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- Expired - Fee Related
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Abstract
The utility model discloses a negative pressure switch for a vacuum packaging machine. The negative pressure switch is characterized in that an air chamber upper cover is provided, an air chamber lower cover is installed below the air chamber upper cover, an airbag is installed between the air chamber upper cover and the air chamber lower cover, an air evacuation nozzle is installed outside of the air chamber upper cover, and a travel switch is installed outside of the air chamber lower cover. The negative pressure switch has the advantages that the structure is novel, the generation of the phenomenon of the no-load heating of the heating bar is fundamentally eliminated, the service life of the heating bar is prolonged, and the production efficiency of users is enhanced.
Description
Technical field:
The utility model relates to packing technique, is the parts on the packaging facilities, specifically, is a kind of vacuum packing machine negative pressure switch.
Background technology:
Vacuum packaging is that the protection product is not subjected to the packing of pot-lives such as environmental pollution and food and extend, can improve the value and the quality of product.Vacuum-packed technique originates from the forties in 20th century.Since nineteen fifty, polyester, sealed polyethylene plastic were successfully applied to commodity packaging, vacuum packing machine was just developed rapidly.
In people's live and work field, various plastics vacuum packagings can be found everywhere.Light, sealing, fresh-keeping, anticorrosion, rust proof plastics vacuum packaging spread all over from food to the medicine, knit goods, are fabricated onto numerous areas such as Metal Processing Factory and laboratory from sophisticated product.The vacuum-packed application of plastics is increasingly extensive, has promoted the development of plastics vacuum packing machines.
On packing method, except that vacuum packaging, also adopt vacuumizing-inflating packing (controlled atmospheric packing), with aerated ingredients, the research of packing and gas Flushing Machine three aspects is combined closely.
So-called vacuum-packed, be that packing material (as food) is placed in the airtight container, it is bonding with the packing in the packing material outside after requiring that negative pressure generator (as vacuum pump) is reduced to regulation with the air pressure in the airtight container, reaches the purpose that the environment of packing material and packing environment are outward separated.
So-called controlled atmospheric packing; be that packing material (as food) is placed in the airtight container; negative pressure generator (as vacuum pump) is reduced to regulation with the air pressure in the airtight container and requires the back to charge into protective gas to airtight container; or employing respiratory mode; by charging into the content of oxygen in the protective gas reduction airtight container; at last that the packing in the packing material outside are bonding, reach the purpose that the environment of packing material and packing environment are outward separated.
In the practical operation of vacuum (controlled atmosphere) wrapping machine, row's heat element (being commonly referred to as heating box) damages (blowing) easily in the heat-sealing, the reason of blowing heating box has two kinds of possibilities, the one, when the operating personnel arrives another station in swing vacuum room cover (3), at the stroke switch connection, vacuum pump has started and vacuum room cover does not have hand to be removed (thinking adhesive by mistake) under the situation of adhesive to the following flat board, cause the normal execution of wrapping machine program, when running to the involution program, owing to do not form vacuum in the vacuum chamber, therefore the power of involution action can't be provided, causing heat-sealing to go up row's normal heating and seal down arranges and heat-sealing normally pressing of row down, form the unloaded heating phenomena of heating box, because the heat that heating box produces can't pass to other object (heating box shows rubescent phenomenon when zero load is heated) rapidly, so very easily cause heating box to blow phenomenon.
Second kind of factor that heating box blows easily is that wrapping machine is after a station executes program, vacuum room cover under the effect of tension spring tension with following plate isolation, because vacuum room cover is to move under the tension spring tension effect, so vacuum room cover very easily occurs at the upper and lower dancing of balance position, multiple and the action in position of travel switch appears in this phenomenon easily, so just cause the operation once more of program, above-mentioned first kind of situation occur, the heating box accelerate the failure.
Summary of the invention;
The purpose of this utility model provides a kind of generation of fundamentally having stopped the unloaded heating phenomena of heating box, has prolonged the service life of heating box, has improved the vacuum packing machine negative pressure switch of user's production efficiency.
Technical solution of the present utility model is: a kind of vacuum packing machine negative pressure switch, it is characterized in that: the air chamber loam cake is arranged, the air chamber lower cover is housed under the air chamber loam cake, between air chamber loam cake and air chamber lower cover air bag is housed, the air chamber loam cake is equipped with the mouth of bleeding outward, and the air chamber lower cover is equipped with travel switch outward.
Air bag described in the utility model is arranged in the cavity between air chamber loam cake and air chamber lower cover, and the air chamber loam cake is connected by attachment bolt with the air chamber lower cover.Bleed and between mouth and air chamber loam cake seal ring is housed.Below the air chamber lower cover, have pore.Travel switch has shell, and push rod is housed in the shell, and the upper end of push rod is arranged in the below of the air bag of air chamber lower cover, and the lower end that is positioned at shell and the moving contact of push rod join, and the moving contact below is a break back contact, and another break back contact is housed on the push rod above the moving contact.The shell of travel switch relies on bolt of rear end plate to be loaded on air chamber lower cover below.There are common terminal, normally closed terminals and Chang Kai terminals in the lower end of travel switch.
The beneficial effects of the utility model are: novel structure, fundamentally stopped the generation of the unloaded heating phenomena of heating box, prolonged the service life of heating box, improved user's production efficiency.
Description of drawings:
Fig. 1 is the structural representation of a kind of vacuum packing machine negative pressure switch of the present utility model;
Fig. 2 is the outside drawing of vacuum packing machine negative pressure switch of the present utility model.
The specific embodiment:
Fig. 1, Fig. 2 have described an embodiment of the present utility model jointly, comprise following part in this embodiment:
1, the mouth of bleeding; 2, go up the lower chamber attachment bolt; 3, air chamber lower cover; 4, the travel switch bolt that is fixedly connected; 5, pre-bar; 6, break back contact (Nc); 7, travel switch shell; 8, moving contact (Com); 9, break back contact (No); 10, pore; 11, air bag; 12, air chamber loam cake; 13, seal ring; 14, common terminal (COM); 15, normally closed terminals (Nc); 16, often open terminals (No).
Specifically: have under air chamber loam cake 12, the 12 air chamber loam cakes air chamber lower cover 3 is housed, 3 of air chamber loam cake 12 and air chamber lower covers are equipped with air bag 11, the air chamber loam cake 12 outer mouths 1 of bleeding that are equipped with, the air chamber lower cover 3 outer travel switches that are equipped with.Described air bag 11 is arranged in the cavity of 3 of air chamber loam cake 12 and air chamber lower covers, and air chamber loam cake 12 is connected by attachment bolt 2 with air chamber lower cover 3.Bleed 12 of mouth 1 and air chamber loam cakes is equipped with seal ring 13.Below air chamber lower cover 3, have pore 10.Travel switch has shell 7, push rod 5 is housed in the shell 7, and the upper end of push rod 5 is arranged in the below of the air bag 11 of air chamber lower cover 3, and the lower end that is positioned at shell 7 and the moving contact 8 of push rod 5 join, moving contact 8 belows are break back contact 6, and another break back contact 9 is housed on the push rod above the moving contact 8.The shell 7 of travel switch relies on bolt of rear end plate 4 to be loaded on air chamber lower cover 3 belows.There are common terminal 14, normally closed terminals 15 and Chang Kai terminals 16 in the lower end of travel switch.
The negative pressure switch principle of work:
Connect with the chamber of vacuum gas-control packing device with will bleed mouth 1 of vacuum hose, air chamber loam cake 12 communicates with the chamber of wrapping machine with little air chamber between the air bag 11, and it and wrapping machine chamber almost keep same pressure simultaneously.When vacuum chamber cap and following dull and stereotyped pressing, vacuum pump vacuumizes the vacuum chamber, also simultaneously the air chamber loam cake 12 of negative pressure switch and the little air chamber between the air bag 11 are vacuumized, attenuating along with stingy chamber psia, air bag 11 under atmospheric effect upwards distortion (air bag is to be made by rubber, have certain elasticity), push rod 5 moves up under the effect of moving contact 8 retracing springs, and final moving contact 8 resets fully.When a program is complete, the stingy chamber of wrapping machine chamber and negative pressure switch is got back to atmospheric condition simultaneously, and the pressure of air bag 11 both sides reaches balance, and air bag 11 returns to original state because of self elastic deformation, therefore push rod 5 promotes moving contact 8 and moves downward, and gets back to readiness for action.
Readiness for action, the common terminal 14 and normally closed terminals 15 conductings of negative pressure switch, negative pressure switch is at operating state common terminal 14 and often open terminals 16 conductings.Utilize in the wrapping machine electrical control the above-mentioned operating principle of negative pressure switch with the common terminal 14 of negative pressure switch, often open wiring auspicious 16 and be serially connected in " vacuum time " and regulate on the coil of delay timer, have only when negative pressure switch action back " vacuum time " adjusting delay timer and just pick up counting, after being designed to have only the action of " vacuum time " delay timer on electric, " sealing time " delay timer, " hardening time " delay timer be successive relay trip.So just fundamentally stop the generation of the unloaded heating phenomena of heating box, prolonged the service life of heating box.
Claims (7)
1, a kind of vacuum packing machine negative pressure switch is characterized in that: the air chamber loam cake is arranged, the air chamber lower cover is housed under the air chamber loam cake, between air chamber loam cake and air chamber lower cover air bag is housed, the air chamber loam cake is equipped with the mouth of bleeding outward, and the air chamber lower cover is equipped with travel switch outward.
2, vacuum packing machine negative pressure switch according to claim 1 is characterized in that: air bag is arranged in the cavity between air chamber loam cake and air chamber lower cover, and the air chamber loam cake is connected by attachment bolt with the air chamber lower cover.
3, vacuum packing machine negative pressure switch according to claim 1 and 2 is characterized in that: bleed and between mouth and air chamber loam cake seal ring is housed.
4, vacuum packing machine negative pressure switch according to claim 1 and 2 is characterized in that: have pore below the air chamber lower cover.
5, vacuum packing machine negative pressure switch according to claim 1 and 2, it is characterized in that: travel switch has shell, push rod is housed in the shell, the upper end of push rod is arranged in the below of the air bag of air chamber lower cover, the lower end that is positioned at shell and the moving contact of push rod join, the moving contact below is a break back contact, and another break back contact is housed on the push rod above the moving contact.
6, vacuum packing machine negative pressure switch according to claim 5 is characterized in that: the shell of travel switch relies on bolt of rear end plate to be loaded on air chamber lower cover below.
7, vacuum packing machine negative pressure switch according to claim 1 and 2 is characterized in that: there are common terminal, normally closed terminals and Chang Kai terminals in the lower end of travel switch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200424377U CN201120958Y (en) | 2007-10-29 | 2007-10-29 | Negative pressure switch of vacuum packaging machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200424377U CN201120958Y (en) | 2007-10-29 | 2007-10-29 | Negative pressure switch of vacuum packaging machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201120958Y true CN201120958Y (en) | 2008-09-24 |
Family
ID=40008180
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200424377U Expired - Fee Related CN201120958Y (en) | 2007-10-29 | 2007-10-29 | Negative pressure switch of vacuum packaging machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201120958Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102537144A (en) * | 2010-12-14 | 2012-07-04 | 苏州奥凯五金机电有限公司 | Blocking indehiscent air brake |
| CN102574591A (en) * | 2009-07-29 | 2012-07-11 | 克里奥瓦克公司 | Vacuum skin packaging of products arranged on a support |
| CN103644121A (en) * | 2013-12-05 | 2014-03-19 | 王水争 | Simple automatic vacuum pump supply switch |
| CN105832480A (en) * | 2016-03-17 | 2016-08-10 | 中国人民解放军第三军医大学第三附属医院 | Mattress capable of serving as stretcher |
-
2007
- 2007-10-29 CN CNU2007200424377U patent/CN201120958Y/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102574591A (en) * | 2009-07-29 | 2012-07-11 | 克里奥瓦克公司 | Vacuum skin packaging of products arranged on a support |
| CN102574591B (en) * | 2009-07-29 | 2014-09-24 | 克里奥瓦克公司 | Vacuum skin packaging of products arranged on a support |
| CN102537144A (en) * | 2010-12-14 | 2012-07-04 | 苏州奥凯五金机电有限公司 | Blocking indehiscent air brake |
| CN103644121A (en) * | 2013-12-05 | 2014-03-19 | 王水争 | Simple automatic vacuum pump supply switch |
| CN105832480A (en) * | 2016-03-17 | 2016-08-10 | 中国人民解放军第三军医大学第三附属医院 | Mattress capable of serving as stretcher |
| CN105832480B (en) * | 2016-03-17 | 2019-01-11 | 中国人民解放军第三军医大学第三附属医院 | It can be used as the mattress of stretcher |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080924 Termination date: 20111029 |