Closing device is vacuum-packed
Technical field
The present invention relates to a kind of vacuum packaging closing devices.
Background technique
Air in packing container can be completely drawn out sealing by vacuum packaging closing device, maintain to subtract in bag in height
Pressure condition, air starvation are equivalent to hypoxemia effect, microorganism are made not have life condition, and to reach, food is fresh, disease-free rotten occurs
Purpose.
Current vacuum packaging closing device generally comprises a pedestal, a cover board, a vacuum pump and an enclosed mechanism, pedestal
On be provided with for place be equipped with product packaging bag cavity, cover board for cover close on pedestal cavity to be sealed, vacuum
The bleeding point of pump is connected by pipeline with cavity, and enclosed mechanism is arranged in cavity, and vacuum packaging closing device will be in use, will
Packaging bag is placed into cavity, then covers cover board, is then turned on vacuum pump, and vacuum pump extracts the air in cavity out, vacuum
Pump work for a period of time after, enclosed mechanism seals the open end of packaging bag, to complete the vacuum packaging of product.
But there is also following deficiencies when in use for above-mentioned vacuum packaging closing device: vacuum pump work for a period of time
After (time span is previously set), that is, thinks that the vacuum degree in cavity is qualified, then just product is sealed, but this is only
Gastight situation is fully sealed suitable for cavity, but in actual use, cavity can not be often fully sealed by cover board, always
Can have some gaps enters air in cavity, in this way, after the time span set by vacuum pump work, in cavity
It is unable to reach predetermined vacuum level, at this moment by packaging bag enclosing, it will so that the vacuum degree in packaging bag is unqualified, so that packet
Residual air in packing is easy the foodstuff deterioration so that in packaging bag.
Summary of the invention
The technical problem to be solved by the invention is to provide a kind of vacuum packaging closing devices, can guarantee packaging bag
Interior vacuum degree is qualified, and can drop out to avoid the product in packaging bag.
In order to solve the above technical problems, vacuum packaging closing device provided by the invention, it include a pedestal, a cover board,
One vacuum pump and an enclosed mechanism, the cavity for placing the packaging bag that product is housed is provided on pedestal, and cover board is closed for covering
To seal cavity on pedestal, the bleeding point of vacuum pump is connected by pipeline with cavity, is provided with one on the cover board
Telescopic air bag is fixed with a third conducting element on air bag, the gas for air bag to be communicated with the atmosphere is provided on cover board
Hole;
It is provided with one first groove in the cavity, one first conducting element and one second is provided in the first groove and is led
Electric device, when cover plate lid is closed on pedestal, third conducting element is oppositely arranged with the first conducting element, the second conducting element;
It is provided in the cavity and is pushed for the position of the close open end to the packaging bag being put into cavity
Fixed fixed mechanism;
The enclosed mechanism includes one first electric heating strip of paper used for sealing and one second electric heating strip of paper used for sealing, and it is recessed to be provided with one second in cavity
Slot is provided with a mounting base in the second groove, and the setting of the first electric heating strip of paper used for sealing is provided with a cylinder in mounting base, on cover board, the
Two electric heating strip of paper used for sealings are arranged on the piston rod of cylinder, and when cover plate lid is closed on pedestal, the first electric heating strip of paper used for sealing and the second electric heating are sealed
Item is oppositely arranged;
The vacuum packaging closing device further includes an inflator pump, a relay, a solenoid valve, a switch, a power supply
It is connected by pipeline with cavity with the gas outlet of a gas source, inflator pump;
First conducting element, the electromagnetic coil of solenoid valve, power supply, inflator pump, the coil of relay, the second conducting element according to
Secondary concatenation;
Switch, power supply, the normally-closed contact of relay, vacuum pump are sequentially connected in series forming circuit;
Gas source is connected by supply air line with cylinder, and the gas passage of solenoid valve is serially connected on supply air line;
The vacuum packaging closing device is in use, first make the first electric heating strip of paper used for sealing and the second electric heating strip of paper used for sealing heating power, then
Packaging bag equipped with product is placed into cavity, and is carried out down by position of the fixed mechanism to the close open end of packaging bag
Pressing is fixed, so that the open end of packaging bag is located at the top of the first electric heating strip of paper used for sealing, then closes on pedestal cover plate lid, then closes
Upper switch is powered on vacuum pump, and air bag gradually extends during vacuum pump vacuumizes cavity, when in cavity
When vacuum degree reaches predetermined value, the length of air bag makes third conducting element connect with the first conducting element, the second conducting element
Touching, at this time:
The coil of relay is powered so that the normally-closed contact of relay disconnects, and vacuum pump stops working;
Meanwhile the electromagnetic coil of solenoid valve is powered so that the gas passage of solenoid valve is connected, so that cylinder operation, cylinder
Piston rod pushes the second electric heating strip of paper used for sealing mobile, so that the first electric heating strip of paper used for sealing and the second electric heating strip of paper used for sealing are by the open end hot pressing of packaging bag
Sealing;
Meanwhile inflator pump is powered on, inflator pump is to recessed interacvity air-filling, and after a certain period of time, air bag bounces back so that for inflation
Three conducting elements are detached from the first conducting element and the second conducting element, so that solenoid valve power-off is closed, the piston rod retraction of cylinder
So that the second electric heating strip of paper used for sealing return, then opens cover board and takes out the packaging bag that vacuum packaging is completed, be put into next be equipped with
The packaging bag of product;After above-mentioned third conducting element is detached from the first conducting element and the second conducting element, the line of relay
The normally-closed contact of relay is connected in circle power loss, so that vacuum pump restarts work;
The fixed mechanism includes a compression bar, and for compression bar close to the second groove and parallel with the first electric heating strip of paper used for sealing, compression bar is solid
Surely two mounting rods are connected with, there are two mounting holes for setting on the bottom surface of cavity, and two mounting rods are mobilizable respectively to be plugged in
In two mounting holes, be provided with a tension spring in each mounting hole, one end of each tension spring with the installation in respective mounting hole
The bottom of bar is connected, and the other end of each tension spring is connected with the bottom of respective mounting hole;
The mounting base includes one first mounting base and one second mounting base, and the second mounting base is located at the first mounting base
Top, the first electric heating strip of paper used for sealing are horizontally set on the upper surface of the second mounting base, and the mounting base further includes one for the
The level angle of the second mounting base is adjusted when one electric heating strip of paper used for sealing is pushed by the second electric heating strip of paper used for sealing so that the first electric heating strip of paper used for sealing with
The regulating mechanism that second electric heating strip of paper used for sealing is parallel to each other;
The regulating mechanism includes four guide posts being arranged on the upper surface of the first mounting base, in the second mounting base
Setting is there are four pilot hole, and the aperture of pilot hole is slightly larger than the diameter of guide post, and four guide posts are mobilizable respectively to be plugged in
In four pilot holes, be arranged with a pressure spring in every guide post, the both ends of each pressure spring respectively with the first mounting base and
Two mounting bases offset.
After using the above structure, compared with prior art, the present invention having the advantage that
The present invention is suitable for open at one end and the closed packaging bag of the other end is vacuum-packed, and when packaging, will be equipped with
The packaging bag of product is placed into cavity, is then closed on pedestal cover plate lid, is then closed a switch so that vacuum pump energization work
Make, air pressure when vacuum pump gradually extracts the air in cavity out in cavity gradually decreases, and inside air bag is by stomata and outside
Portion's atmosphere, in this way, form draught head between inside air bag and cavity so that air bag by air pressure promotion and stretch
Long, with the continuous work of vacuum pump, the air pressure in cavity is constantly reduced, so that the draught head between inside air bag and cavity is got over
Come bigger, so that air bag constantly extends, and when the vacuum degree in cavity reaches predetermined value, the length of air bag just can be with
So that third conducting element is in contact with the first conducting element, the second conducting element, so that the first conducting element and second
Conducting element is conducted, and solenoid valve must conduct at this time, cylinder operation, and cylinder pushes the second electric heating strip of paper used for sealing mobile, so that second
Electric heating strip of paper used for sealing and the first electric heating strip of paper used for sealing are by the open end hot sealing of packaging bag;In this way, in the present invention, only when true in cavity
Could be formed when reciprocal of duty cycle reaches predetermined value, between inside air bag and cavity enough pressure differences come so that air bag be elongated to it is enough
Length is come so that third conducting element is in contact with the first conducting element, the second conducting element, and if cover board is not by cavity
It is fully sealed, that is to say, that if there is gap air is entered in cavity, then, the pumpdown time of vacuum pump will
Corresponding to extend, when only the vacuum degree in vacuum pump work to cavity reaches predetermined value, cylinder just will do it movement and will wrap
The open end hot sealing of pack, in this way, can only extend the working time of vacuum pump also even if cavity is poorly sealed to protect
The vacuum degree demonstrate,proved in packaging bag is qualified, be not in vacuum degree in cavity it is unqualified just by packaging bag hot sealing the case where,
The vacuum degree in packaging bag is effectively ensured, to avoid residual air in packaging bag and make the foodstuff deterioration in packaging bag.
And in the present invention, it is provided with fixed mechanism, after packaging bag is put into cavity, fixed mechanism can be to packet
The position of the close open end of pack carries out pushing fixation, thus can be to avoid the article in packaging bag in vacuum-packed mistake
It is dropped out in Cheng Zhongcong packaging bag.
Detailed description of the invention
Fig. 1 is structural schematic diagram of the invention (cover board does not cover conjunction when on pedestal);
Fig. 2 is structural schematic diagram of the invention (cover plate lid is closed when on pedestal);
Fig. 3 is structural schematic diagram of the invention (when enclosed mechanism seals product);
Fig. 4 is electrical block diagram of the invention;
Fig. 5 is another electrical block diagram of the invention;
Fig. 6 is gas circuit structure schematic diagram of the invention;
Fig. 7 is the structural schematic diagram of mounting base;
Fig. 8 is the A-A direction view in Fig. 1.
Specific embodiment
Present invention will be explained in further detail with reference to the accompanying drawings and detailed description.
As shown in FIG. 1 to FIG. 8, closing device is vacuum-packed in the present invention, it includes a pedestal 1, a cover board 2, a vacuum pump 3
With an enclosed mechanism, it is provided with the cavity 4 for placing the packaging bag that product is housed on pedestal 1, the bottom level of cavity 4, with
Convenient for being horizontally arranged packaging bag, cover board 2 is closed on pedestal 1 for covering to seal cavity 4, and the bleeding point of vacuum pump 3 passes through pipe
Road is connected with cavity 4, and a telescopic air bag 5 is provided on the cover board 2, is fixed with a third conductive element on air bag 5
Part 501 is provided with the stomata 6 for air bag 5 to be communicated with the atmosphere on cover board 2.
It is provided with one first groove 7 in the cavity 4, one first conducting element 8 and one is provided in the first groove 7
The upper end of two conducting elements 9, the upper end of the first conducting element 8 and the second conducting element 9 is below the bottom surface of cavity 4, in this way may be used
To prevent from accidentally touching the first conducting element 8 and the second conducting element 9, when the lid of cover board 2 closes on pedestal 1, third conducting element 501
It is oppositely arranged with the first conducting element 8, the second conducting element 9.
It is provided in the cavity 4 and is carried out down for the position of the close open end to the packaging bag being put into cavity 4
The fixed fixed mechanism of pressing.
The enclosed mechanism includes one first electric heating strip of paper used for sealing 10 and one second electric heating strip of paper used for sealing 11, is provided with one in cavity 4
Second groove 12 is provided with a mounting base 20 in second groove 12, and the first electric heating strip of paper used for sealing 10 is arranged in mounting base 20, the first electricity
The bottom surface that item 10 is lower than cavity 4 is sealed, in this way, packaging bag will not be sealed with the first electric heating when packaging bag to be placed into cavity 4
Item 10 contacts, and is provided with a cylinder 13 on cover board 2, and the second electric heating strip of paper used for sealing 11 is arranged on the piston rod of cylinder 13, when cover board 2 covers
It closing when on pedestal 1, the first electric heating strip of paper used for sealing 10 is oppositely arranged with the second electric heating strip of paper used for sealing 11, in this way, in cylinder movement, cylinder
Piston rod can push the second electric heating strip of paper used for sealing 11 it is mobile come so that the second electric heating strip of paper used for sealing 11 and the first electric heating strip of paper used for sealing 10 by packaging bag
Open end clamps, by the open end hot sealing of packaging bag.
The vacuum packaging closing device further includes an inflator pump 14, a relay 15, a solenoid valve 16, one switch
17, the gas outlet of a power supply 18 and a gas source 19, inflator pump 14 is connected by pipeline with cavity 4.
First conducting element 8, the electromagnetic coil of solenoid valve 16, power supply 18, inflator pump 14, the coil of relay 15, second
Conducting element 9 is sequentially connected in series.
Switch 17, power supply 18, the normally-closed contact of relay 15, vacuum pump 3 are sequentially connected in series forming circuit.
Gas source 19 is connected by supply air line with cylinder 13, and the gas passage of solenoid valve 16 is serially connected on supply air line.
The vacuum packaging closing device is in use, first make the first electric heating strip of paper used for sealing and the second electric heating strip of paper used for sealing heating power, then
Packaging bag equipped with product is placed into cavity, and is carried out down by position of the fixed mechanism to the close open end of packaging bag
Pressing is fixed, so that the open end of packaging bag is located at the top of the first electric heating strip of paper used for sealing, then closes on pedestal cover plate lid, wraps at this time
There are spacing between pack and the first electric heating strip of paper used for sealing, the second electric heating strip of paper used for sealing, then close a switch so that vacuum pump is powered on,
During vacuum pump vacuumizes cavity, the air pressure in cavity is gradually decreased, so that the gas between inside air bag and cavity
Pressure difference is increasing, thus by draught head come so that air bag gradually extends, when the vacuum degree in cavity reaches predetermined value, gas
The length of capsule can just make third conducting element be in contact with the first conducting element, the second conducting element, so that first leads
Electric device and the second conducting element mutual conduction, following three movements of triggering at this time:
(1), the coil of relay is powered so that the normally-closed contact of relay disconnects, and vacuum pump stops working;
(2), the electromagnetic coil of solenoid valve is powered so that the gas passage of solenoid valve be connected, so that gas source is that cylinder supplies,
So that cylinder operation, the piston rod of cylinder pushes the second electric heating strip of paper used for sealing mobile, and the second electric heating strip of paper used for sealing and the first electric heating strip of paper used for sealing will wrap
The open end of pack clamps, so that the first electric heating strip of paper used for sealing and the second electric heating strip of paper used for sealing are by the open end hot sealing of packaging bag;
(3), inflator pump is powered on, and inflator pump is to recessed interacvity air-filling, and after a certain period of time, air bag bounces back so that third for inflation
Conducting element is detached from the first conducting element and the second conducting element so that solenoid valve power-off is closed, the piston rod retraction of cylinder from
And make the second electric heating strip of paper used for sealing return, in this way, may make third conducting element to be detached from after inflating the very short time in inflator pump
First conducting element and the second conducting element, so that the second electric heating strip of paper used for sealing return, it can be to avoid the second electric heating strip of paper used for sealing and
One electric heating strip of paper used for sealing is too long to packaging bag hot pressing time and the case where packaging bag is damaged, then open cover board and take out vacuum packaging
The packaging bag of completion is put into next packaging bag equipped with product;The first conducting element is detached from above-mentioned third conducting element
After the second conducting element, the normally-closed contact of relay is connected in the coil losing electricity of relay, so that vacuum pump is again
It starts to work, in this way, vacuum pump is in running order when new packaging bag is put into cavity, it at this moment only need to be by cover board
Lid is closed onto pedestal, can start that new packaging bag is vacuum-packed, easy to operate.
The fixed mechanism includes a compression bar 30, and compression bar 30 is close to the second groove 12 and flat with the first electric heating strip of paper used for sealing 10
Row, compression bar 30 are fixedly connected with two mounting rods 31, and there are two mounting hole 33, two mounting rods 31 for setting on the bottom surface of cavity 4
It is mobilizable respectively to be plugged in two mounting holes 33, a tension spring 32 is provided in each mounting hole 33, each tension spring 32
One end is connected with the bottom of the mounting rod 31 in respective mounting hole 33, the other end of each tension spring 32 with respective mounting hole
33 bottom is connected, in this way, compression bar is first lifted to (tension spring is stretched at this time) upwards when packaging bag to be put into cavity,
Then packaging bag is placed into cavity, and the open end of packaging bag is passed through and is subsequently placed in the first electric heating strip of paper used for sealing below compression bar
Top, compression bar is then unclamped, at this time since the active force of tension spring moves down compression bar, so that compression bar is by packaging bag close to opening
The position at mouth end is pushed down, and can thus be dropped out to avoid the product in packaging bag from the open end of packaging bag.
The mounting base 20 includes one first mounting base 21 and one second mounting base 22, and the second mounting base 22 is located at first
The top of mounting base 21, the first electric heating strip of paper used for sealing 10 are horizontally set in the second mounting base 22, and the mounting base 20 further includes one
For adjusting the level angle of the second mounting base 22 when the first electric heating strip of paper used for sealing 10 is pushed by the second electric heating strip of paper used for sealing 11 so that
The regulating mechanism that first electric heating strip of paper used for sealing 10 and the second electric heating strip of paper used for sealing 11 are parallel to each other, the regulating mechanism include being arranged first
Four guide posts 23 on the upper surface of mounting base 21, four guide posts 23 are located at four corners of the first mounting base 21,
There are four pilot holes 24, four pilot holes 24 to be located at four corners of the second mounting base 22 for setting in second mounting base 22,
Guide post 23 and pilot hole 24 are arranged in a one-to-one correspondence, and the aperture of pilot hole 24 is slightly larger than the diameter of guide post 23, four guide posts
23 it is mobilizable respectively be plugged in four pilot holes 24, a pressure spring 25, each pressure spring 25 are arranged in every guide post 23
Both ends offset respectively with the first mounting base 21 and the second mounting base 22, in this way, if installing the first electric heating strip of paper used for sealing and the
Deviation is generated when two electric heating strip of paper used for sealings and the first electric heating strip of paper used for sealing and the second electric heating strip of paper used for sealing are not parallel to each other, then, in cylinder
Push the second electric heating strip of paper used for sealing push and the second electric heating strip of paper used for sealing and the first electric heating strip of paper used for sealing are clamped the bag with to packaging bag into
When row hot sealing, the second electric heating strip of paper used for sealing can apply lower pressure to the first electric heating strip of paper used for sealing, will also make the second mounting base by
Lower pressure and move down, at this time due to the aperture of pilot hole be slightly larger than guide post diameter, then being pushed in the second mounting base
Power and when moving down the second mounting base can according to the level angle of the second electric heating strip of paper used for sealing come and adjust automatically its own level inclination,
So that the first electric heating strip of paper used for sealing can be substantially parallel with the second electric heating strip of paper used for sealing, in this way, the first electric heating strip of paper used for sealing and the second electric heating strip of paper used for sealing energy
The open end of packaging bag is completely sealed, is avoided the occurrence of since the first electric heating strip of paper used for sealing and the second electric heating strip of paper used for sealing are not substantially parallel
And the case where making some region of the open end of packaging bag not be hot pressed sealing.
The foregoing is only a description of the preferred application of the present invention, but is not to be construed as the limit to claim
System, structure of the invention can have other variations, be not limited to above structure.In short, all in independent claims of the invention
Protection scope in made various change be within the scope of the invention.