CN110949737A - Small-size vacuum skin packagine machine - Google Patents
Small-size vacuum skin packagine machine Download PDFInfo
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- CN110949737A CN110949737A CN201911401032.1A CN201911401032A CN110949737A CN 110949737 A CN110949737 A CN 110949737A CN 201911401032 A CN201911401032 A CN 201911401032A CN 110949737 A CN110949737 A CN 110949737A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
- B65B31/00—Packaging articles or materials under special atmospheric or gaseous conditions; Adding propellants to aerosol containers
- B65B31/02—Filling, closing, or filling and closing, containers or wrappers in chambers maintained under vacuum or superatmospheric pressure or containing a special atmosphere, e.g. of inert gas
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
- B65B51/00—Devices for, or methods of, sealing or securing package folds or closures; Devices for gathering or twisting wrappers, or necks of bags
- B65B51/10—Applying or generating heat or pressure or combinations thereof
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
- B65B57/00—Automatic control, checking, warning, or safety devices
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
- B65B61/00—Auxiliary devices, not otherwise provided for, for operating on sheets, blanks, webs, binding material, containers or packages
- B65B61/04—Auxiliary devices, not otherwise provided for, for operating on sheets, blanks, webs, binding material, containers or packages for severing webs, or for separating joined packages
- B65B61/06—Auxiliary devices, not otherwise provided for, for operating on sheets, blanks, webs, binding material, containers or packages for severing webs, or for separating joined packages by cutting
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Dispersion Chemistry (AREA)
- Vacuum Packaging (AREA)
- Containers And Plastic Fillers For Packaging (AREA)
Abstract
The invention relates to a vacuum packaging machine, in particular to a small vacuum skin packaging machine. The vacuum heating device comprises an upper vacuum heating assembly, a lower vacuum chamber cavity and a vacuum pump, wherein the upper vacuum heating assembly comprises an upper cavity and a heating plate, an air chamber is arranged between the heating plate and the bottom of a first mounting hole, a first air flow channel communicated with the air chamber is arranged on the upper cavity, and a second air flow channel is arranged on the heating plate; sealing strips are arranged on the periphery of the vacuum packaging chamber, the sealing strips are fixed on the lower end face of the upper cavity, and a third airflow channel is arranged on the lower vacuum chamber; and the air outlet ends of the first air flow channel and the third air flow channel are respectively connected with the air pumping port of the vacuum pump. The small vacuum skin packaging machine can use the packaging film to carry out skin vacuum packaging on food. Compared with the prior art, the automatic packaging machine has the advantages of high packaging vacuum degree, high packaging speed, high efficiency, intellectualization and the like.
Description
Technical Field
The invention relates to a vacuum packaging machine, in particular to a small vacuum skin packaging machine.
Background
The vacuum skin packaging machines on the market at present are mainly divided into two categories:
first, industrial vacuum skin packagine machine, it at first will take the glued membrane to preheat, then adopts vacuum gas to see through the membrane after ventilative cardboard will heat and adsorb the object surface, does not realize the vacuum between actual object and the cardboard, just adsorbs into object surface shape with the membrane. In addition, the industrial vacuum skin packaging machine is not suitable for the food packaging industry because the film is adhered to the surface of an object by the viscosity of the heated chemical adhesive.
Secondly, a semi-automatic vacuum skin packaging machine is adopted, a plurality of packaging boxes are packaged at one time, but the semi-automatic vacuum skin packaging machine is large in size, high in energy consumption and high in price, and foreign equipment is different in configuration and reaches dozens of ten thousand yuan.
Disclosure of Invention
The invention aims to design a small vacuum skin packaging machine which can use a packaging film to carry out skin vacuum packaging on food and is suitable for families and workshops.
In order to achieve the purpose, the invention adopts the following technical solutions: a small-size vacuum skin packagine machine, its characterized in that it contains last vacuum heating assembly, lower vacuum chamber cavity, vacuum pump, wherein:
the upper vacuum heating assembly comprises an upper cavity and a heating plate, a first mounting hole is formed in the lower end face of the upper cavity, the heating plate is arranged in the first mounting hole, an air chamber is arranged between the heating plate and the bottom of the first mounting hole, a first air flow channel communicated with the air chamber is formed in the upper cavity, and a second air flow channel is formed in the heating plate;
a vacuum packaging chamber for supporting a packaging box is arranged on the lower vacuum chamber cavity, the frame of the vacuum packaging chamber is lower than the end face of the lower vacuum chamber cavity, sealing strips are arranged on the periphery of the vacuum packaging chamber, the sealing strips are fixed on the lower end face of the upper cavity, and a third air flow channel is arranged on the lower vacuum chamber cavity in the sealing closed area of the sealing strips;
and the air outlet ends of the first air flow channel and the third air flow channel are respectively connected with the air pumping port of the vacuum pump.
In order to facilitate automatic fixation of the film material during film drawing, the technical scheme is further provided with: the vacuum chamber comprises a lower vacuum chamber cavity, a vacuum cavity is arranged in the lower vacuum chamber cavity, a film material negative pressure adsorption device is arranged on the lower vacuum chamber cavity and consists of a plurality of fine adsorption air passages and an adsorption main air passage, negative pressure adsorption ports of the fine adsorption air passages are arranged on one side end face of the lower vacuum chamber cavity outside a sealed closed region, the lower ends of the fine adsorption air passages are connected with the adsorption main air passage, and air outlet ends of the adsorption main air passage are connected with an air extraction port of a vacuum pump.
In order to enable the gas to uniformly and quickly enter the lower cavity of the vacuum chamber, improve the packaging speed and simultaneously prevent the film material from being sucked into the airflow channel, the technical scheme is further provided with: the second airflow channel is composed of a plurality of branch airflow channels arranged on the heating plate, and the lower port of each branch airflow channel is of a small hole structure.
In order to prevent the film material head from retracting after the film material is cut off, the technical scheme is further provided with: still be equipped with the film pressing device in the frame of the feeding one side of vacuum chamber cavity down, the film pressing device contains support, last film pressing roller and lower film pressing roller, the support mounting is in the frame, lower film pressing roller both ends with the support rotates the hookup, go up film pressing roller both ends with hole groove on the support articulates that floats.
In order to facilitate the removal of the waste around the packaging box, the technical scheme is further provided with: and the periphery of the frame of the vacuum packaging chamber is provided with an edge material film cutting groove.
In order to facilitate the quick, convenient and orderly cutting off of the membrane material by the blade, the technical scheme is further provided: and a small film cutting groove is arranged on the end surface of the feeding side of the lower vacuum chamber cavity.
In order to make the product compact in structure and concise in gas path, the technical scheme is further provided with: and a fourth air flow channel is arranged on the lower vacuum chamber cavity, second sealing strips are arranged on the peripheries of an air inlet of the fourth air flow channel and an air outlet of the first air flow channel, the second sealing strips are arranged on the lower end surface of the upper cavity, and a transition air chamber is formed between the second sealing strips and the end surface of the lower vacuum chamber cavity during operation.
In order to realize intelligent packaging, the technical scheme is further provided with: the vacuum pump is characterized in that a photoelectric switch is arranged on the lower vacuum chamber body outside a negative pressure adsorption port of the small adsorption air passage, the air outlet end of the adsorption main air passage is connected with the air exhaust port of the vacuum pump through a normally closed path of a second two-position three-way electromagnetic valve, the photoelectric switch is connected in series on a coil main path of a second relay, a first normally open contact of the second relay is connected with the control end of the second two-position three-way electromagnetic valve, and a second normally open contact of the second relay is connected with the control end of the vacuum pump.
In order to further realize intelligent packaging, reduce the complicated control of the program in the packaging process, improve the working efficiency, and further improve the packaging speed and the accuracy of the control of the vacuum packaging time, the technical scheme is further provided with: a time control relay and a travel switch are also arranged, the travel switch is arranged between the upper cavity and the lower vacuum chamber cavity, the air outlet end of the fourth air flow channel is connected with the air pumping port of the vacuum pump through a normally closed passage of a first two-position three-way electromagnetic valve, the normally open path of the first two-position three-way electromagnetic valve is communicated with the atmosphere, the coil of the time control relay is connected in series on the main path of the travel switch, the normally closed delay contact and the instantaneous normally open contact of the time control relay are connected in series on the coil main circuit of the first relay, a first normally open contact of the first relay is connected with the power supply control end of the first two-position three-way electromagnetic valve, and the second normally open contact of the first relay is connected with the second normally open contact of the second relay in parallel, and the normally closed contact of the first relay is connected with the normally open contact of the second relay in series.
Compared with the prior art, the invention has the following beneficial effects: the food skin vacuum packaging effect is good, the vacuum degree is high, the packaging film is fixed rapidly and automatically, the cutting of the packaging film and the removal of waste materials at the edges are rapid, convenient and neat, the packaging operation procedure is simple and intelligent, the packaging speed is high, the efficiency is high, the product structure is compact, and the food skin vacuum packaging device is suitable for families and workshops.
Drawings
Fig. 1 is an exploded view of the present embodiment.
Fig. 2 is a main sectional view of the present embodiment.
Fig. 3 is a cross-sectional view taken along line B-B of fig. 2.
FIG. 4 is an exploded view of the upper vacuum heating assembly of this embodiment.
Fig. 5 is a perspective view of the film pressing device according to the present embodiment.
Fig. 6 is a structural plan view of the lower vacuum chamber cavity in this embodiment.
Fig. 7 is a cross-sectional view taken along line C-C of fig. 6.
Fig. 8 is a cross-sectional view taken along line D-D of fig. 6.
FIG. 9 is a schematic view of the suction route of the vacuum pump according to the present embodiment.
Fig. 10 is an electrical control schematic diagram of the present embodiment.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples.
As shown in fig. 1, the present embodiment includes an upper vacuum heating assembly 100, a lower vacuum chamber 15, a film material roller 24, a film material negative pressure adsorption device, and a film pressing device 200, wherein:
as shown in fig. 2, 3 and 4, the upper vacuum heating assembly 100 includes an upper chamber 1, a heating plate 2, a heat insulation shield 7 and a heat insulation pad 6, the heat insulation shield 7 is disposed on an outer surface of the upper chamber 1, the heat insulation pad 6 is adhered to an upper surface of the heat insulation shield 7 to prevent scalding, a first mounting hole is disposed on a lower end surface of the upper chamber 1, the heating plate 2 is disposed in the first mounting hole, an air chamber 3 is disposed at a bottom of the heating plate 2 and the first mounting hole, the heating plate 2 is fixed at the bottom of the first mounting hole by a gasket 5, a first air flow channel 26 communicated with the air chamber 3 is disposed on the upper chamber 1, a second air flow channel 4 is disposed on the heating plate 1,
the second airflow channel 4 is composed of a plurality of branch airflow channels arranged on the heating plate 2, and the lower port of each branch airflow channel is of a small hole structure, so that air can uniformly and quickly enter the lower cavity of the vacuum chamber, the packaging speed is improved, and meanwhile, the film material is prevented from being sucked into the airflow channels.
In addition, in order to make the product structure compact and the gas path simple, a fourth gas flow channel 29 is arranged on the lower vacuum chamber cavity 15, second sealing strips 27 are arranged around the gas inlet of the fourth gas flow channel 29 and the gas outlet of the first gas flow channel 26, the second sealing strips 27 are arranged on the lower end surface of the upper cavity 1, and a transition gas chamber 28 is formed between the second sealing strips 27 and the end surface of the lower vacuum chamber cavity 15 during operation.
As shown in fig. 6, 7 and 8, a vacuum packing chamber 16 for supporting a packing box 25 is arranged on the lower vacuum chamber cavity 15, a frame 17 of the vacuum packing chamber 16 is lower than an end surface of the lower vacuum chamber cavity 15, sealing strips 8 are arranged around the vacuum packing chamber 16, the sealing strips 8 are fixed on the lower end surface of the upper cavity 1, and a third air flow channel 24 is arranged on the lower vacuum chamber cavity 15 in a sealing closed area of the sealing strips 6.
And the periphery of the frame of the vacuum packaging chamber 16 is provided with a residual material film cutting groove 13, so that the waste materials around the packaging box can be removed conveniently.
A small film cutting groove 18 is formed in the end face of the feeding side of the lower vacuum chamber cavity 15, so that a blade can cut off film materials quickly, conveniently and orderly.
As shown in fig. 2, 6, 7, and 8, in this embodiment, in order to facilitate automatic fixing of a film material during film drawing, the film material negative pressure adsorption device is disposed on the lower vacuum chamber cavity 15, the film material negative pressure adsorption device is composed of a plurality of fine adsorption air channels 11 and an adsorption main air channel 12, a negative pressure adsorption port of each fine adsorption air channel 11 is disposed on an end surface of one side of the lower vacuum chamber cavity 15 outside a sealed closed region, a lower end 11 of each fine adsorption air channel 11 is connected to the adsorption main air channel 12, and an air outlet end of the adsorption main air channel 12 is connected to an air suction port of the vacuum pump 22.
As shown in fig. 1, fig. 2 and fig. 5, the film pressing device 200 is disposed on the frame 23 on the feeding side of the lower vacuum chamber 15, and includes a support 19, an upper film pressing roller 21 and a lower film pressing roller 20, the support 19 is mounted on the frame 23, two ends of the lower film pressing roller 20 are rotatably connected to the support 19, and two ends of the upper film pressing roller 21 are floatingly connected to the hole slots 31 of the support 19. Go up press mold roller 21 and compress tightly membrane material 9 through self weight, can prevent effectively on the one hand that the membrane material from cutting off back membrane material stub bar withdrawal, on the other hand press mold roller both ends slide from top to bottom in support upper hole groove 31, can guarantee that membrane material 9 is pulled forward.
As shown in fig. 1, 2, 9, and 10, in order to realize intelligent packaging, a photoelectric switch S1 is disposed on the lower vacuum chamber 15 outside the negative pressure adsorption port of the fine adsorption air duct 11, the air outlet end of the adsorption main air duct 12 is connected to the suction port of the vacuum pump 22 through a normally closed path of a second two-position three-way electromagnetic valve Y2, the photoelectric switch S1 is connected in series to the coil main path of a second relay KA2, a first normally open contact of the second relay KA2 is connected to the control end of the second two-position three-way electromagnetic valve Y2, and a second normally open contact of the second relay KA2 is connected to the control end of the vacuum pump 22.
As shown in fig. 1, 9, and 10, in this embodiment, in order to further implement intelligent packaging, reduce the complicated control of the procedure in the packaging process, improve the work efficiency, and further improve the accuracy of the control of the packaging speed and the vacuum packaging time, the technical solution is further configured to: a time control relay KT1 and a travel switch SQ1 are also arranged, the travel switch SQ1 is arranged between the upper cavity 1 and the lower vacuum chamber 15, the air outlet end of the fourth air flow channel 29 is connected with the air suction port of the vacuum pump 22 through the normally closed passage of the first two-position three-way electromagnetic valve Y1, the normally open path of the first two-position three-way electromagnetic valve Y1 is communicated with the atmosphere, the coil of the time control relay KT1 is connected in series with the main path of the travel switch SQ1, the normally closed delay contact and the instantaneous normally open contact of the time control relay KT1 are connected in series on the coil main circuit of the first relay KA1, a first normally open contact of the first relay KA1 is connected with a power control end of the first two-position three-way electromagnetic valve Y1, the second normally open contact of the first relay KA1 is connected with the second normally open contact of the second relay KA2 in parallel, the normally closed contact of the first relay KA1 is connected with the normally open contact of the second relay KA2 in series.
As shown in fig. 10, during operation, firstly, the operating switch SA1 switches on the operating power supply of the packaging machine, the temperature controller TC1 is powered on, and detects the operating temperature of the heating plate, the operating temperature is in the detection range, the normally open contact of the temperature controller TC1 is powered on and closed, so that the relay SSR1 is powered on, the normally open contact of the relay SSR1 is powered on and closed, the power supply of the heating wire EH1 is switched on, and the heating wire EH1 preheats the heating plate 2.
Secondly, the packing box 14 and the packing material 25 are placed in the vacuum packing chamber 16 of the lower vacuum chamber body 15, the temperature reaches the set temperature, and the film is pulled to the photoelectric switch S1 through the film pressing device 200 while covering the vacuum packing chamber 16. As shown in fig. 10, after the photoelectric switch light S1 senses that the film material is in place, the second relay KA2 is powered on, the first and second normally open contacts of the second relay KA2 are closed, the vacuum pump 22 is started, meanwhile, the second two-position three-way solenoid valve Y2 is reversed, the normally closed path of the second two-position three-way solenoid valve Y2 is opened, and vacuum suction is performed through the BC path of the second two-position three-way solenoid valve Y2, the adsorption main air duct 12 and the fine adsorption air duct 11 to adsorb and fix the packaging film 9 on the lower vacuum chamber cavity 15.
Thirdly, the upper vacuum heating assembly 100 is pressed down, the sealing strip 8 seals the surrounding area of the vacuum packaging chamber 16, and the upper cavity touches the travel switch SQ1, as shown in fig. 10, the travel switch SQ1 is connected with the power supply of the time relay KT1, the time relay KT1 starts to time, meanwhile, the instant normally open contact of the time relay KT1 is closed, the first relay KA1 is electrified, the first and second normally open contacts of the first relay KA1 are closed and the normally closed contact is disconnected, the power supply of the first two-position three-way solenoid valve Y1 is connected, the first two-position three-way solenoid valve Y1 is reversed, meanwhile, the power supply of the second two-position three-way solenoid valve Y2 is disconnected, the second two-position three-way solenoid valve Y2 is reset, one vacuum suction path of the vacuum pump 22 is used for vacuumizing the vacuum packaging chamber 16 through the BA path of the second two-position three-way solenoid valve Y2 and the third air flow path 24, and the other vacuum suction path of the, The fourth air flow channel 29, the transition air chamber 28, the first air flow channel 26, the air chamber 3, and the second air flow channel 4 vacuumize the upper side of the packaging film 9, so that the packaging film 9 is adsorbed on the heating plate 2, and the packaging film 9 is baked to a softened state by the heating plate 2.
Fourthly, as shown in fig. 10, when the time relay KT1 controls the heating time to be up, the normally closed delay contact of the time relay KT1 is disconnected, the coil power of the first relay KA1 is cut off, the first relay KA1 is de-energized, the first and second normally open contacts are reset, the power of the first two-position three-way solenoid valve Y1 is disconnected, the first two-position three-way solenoid valve Y1 is reset, the BA passage of the first two-position three-way solenoid valve Y1 is connected, and the atmosphere enters the packaging film 9 through the BA passage of the first two-position three-way solenoid valve Y1, the fourth air flow passage 29, the transition air chamber 28, the first air flow passage 26, the air chamber 3 and numerous small holes of the second air flow passage 4, and at this time, the vacuum packaging chamber 16 is still in a vacuum state. The pressure difference is formed between the upper and lower sides of the packaging film 9, and the softened packaging film is tightly attached to the surfaces of the object 25 and the packaging box 14 under the action of the pressure difference. After the packaging is finished, the upper vacuum heating assembly 100 is opened, the stroke switch SQ1 is cut off, meanwhile, the waste materials around the packaging film are removed, the photoelectric switch S1 shielding film is removed, the photoelectric switch S1 is cut off, the two-way control power circuit of the vacuum pump 22 is cut off, and the vacuum skin packaging work of a packaging box is finished.
Claims (9)
1. A small-sized vacuum skin packaging machine is characterized by comprising an upper vacuum heating assembly (100), a lower vacuum chamber cavity (15) and a vacuum pump (22), wherein:
the upper vacuum heating assembly (100) comprises an upper cavity (1) and a heating plate (2), a first mounting hole is formed in the lower end face of the upper cavity (1), the heating plate (2) is arranged in the first mounting hole, an air chamber (3) is arranged between the heating plate (2) and the bottom of the first mounting hole, a first air flow channel (26) communicated with the air chamber (3) is formed in the upper cavity (1), and a second air flow channel (4) is formed in the heating plate (1);
a vacuum packaging chamber (16) for supporting a packaging box (14) is arranged on the lower vacuum chamber cavity (15), a frame (17) of the vacuum packaging chamber (16) is lower than the end face of the lower vacuum chamber cavity (15), sealing strips (8) are arranged on the periphery of the vacuum packaging chamber (16), the sealing strips (8) are fixed on the lower end face of the upper cavity (1), and a third air flow channel (30) is arranged on the lower vacuum chamber cavity (15) in a sealing closed area of the sealing strips (8);
the air outlet ends of the first air flow channel (26) and the third air flow channel (30) are respectively connected with the air suction port of the vacuum pump (22).
2. The small-sized vacuum skin packaging machine according to claim 1, characterized in that a film material negative pressure adsorption device is arranged on the lower vacuum chamber cavity (15), the film material negative pressure adsorption device is composed of a plurality of fine adsorption air passages (11) and an adsorption main air passage (12), a negative pressure adsorption port of the fine adsorption air passage (11) is arranged on one side end face of the lower vacuum chamber cavity (15) outside the sealed closed region, the lower end (11) of the fine adsorption air passage (11) is connected with the adsorption main air passage (12), and an air outlet end of the adsorption main air passage (12) is connected with an air exhaust port of the vacuum pump (22).
3. The small-sized vacuum skin packaging machine according to claim 2, characterized in that said second air flow path (4) is composed of a plurality of branch air flow paths provided on said heating plate (2), and the lower end of each branch air flow path is of a small hole structure.
4. The small-sized vacuum skin packaging machine according to claim 3, characterized in that a film pressing device (200) is further arranged on the frame (23) at the feeding side of the lower vacuum chamber cavity (15), the film pressing device (200) comprises a support (19), an upper film pressing roller (21) and a lower film pressing roller (20), the support (19) is mounted on the frame (23), two ends of the lower film pressing roller (20) are rotatably connected with the support (19), and two ends of the upper film pressing roller (21) are in floating connection with the hole grooves (31) on the support (19).
5. The small vacuum skin packaging machine according to claim 4, characterized in that the rim of the vacuum packaging chamber (16) is provided with a rim charge cutting film groove (13) at the periphery.
6. A small vacuum skin packaging machine according to claim 5, characterized in that a fine slit film groove (18) is provided on the end surface of the feed side of the lower vacuum chamber cavity (15).
7. The small vacuum skin packaging machine according to claim 6, characterized in that a fourth air flow channel (29) is arranged on the lower vacuum chamber (15), a second sealing strip (27) is arranged around the air inlet of the fourth air flow channel (29) and the air outlet of the first air flow channel (26), the second sealing strip (27) is arranged on the lower end surface of the upper chamber (1), and a transition air chamber (28) is formed between the second sealing strip (27) and the end surface of the lower vacuum chamber (15) during operation.
8. The small vacuum skin packaging machine according to claim 7, characterized in that a photoelectric switch (S1) is arranged on the lower vacuum chamber cavity (15) outside the negative pressure adsorption port of the fine adsorption air passage (11), the air outlet end of the adsorption main air passage (12) is connected with the suction port of the vacuum pump (22) through the normally closed path of a second two-position three-way solenoid valve (Y2), the photoelectric switch (S1) is connected in series on the coil main path of a second relay (KA2), the first normally open contact of the second relay (KA2) is connected with the control end of the second two-position three-way solenoid valve (Y2), and the second normally open contact of the second relay (KA2) is connected with the control end of the vacuum pump (22).
9. The small-sized vacuum skin packaging machine according to claim 8, characterized in that a time control relay (KT1) and a stroke switch (SQ1) are further provided, the stroke switch (SQ1) is provided between the upper chamber (1) and the lower vacuum chamber (15), the air outlet of the fourth air flow channel (29) is connected with the suction opening of the vacuum pump (22) through the normally closed path of a first two-position three-way solenoid valve (Y1), the normally open path of the first two-position three-way solenoid valve (Y1) is communicated with the atmosphere, the coil of the time control relay (KT1) is connected in series with the main path of the stroke switch (SQ1), the normally closed delay contact and the snap open contact of the time control relay (KT1) are connected in series with the main path of the coil of a first relay (KA1), the first normally open contact of the first relay (KA1) is connected with the three-way power control end of the first two-position three-way solenoid valve (Y1), the second normally open contact of the first relay (KA1) is connected with the second normally open contact of the second relay (KA2) in parallel, and the normally closed contact of the first relay (KA1) is connected with the normally open contact of the second relay (KA2) in series.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911401032.1A CN110949737A (en) | 2019-12-17 | 2019-12-17 | Small-size vacuum skin packagine machine |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911401032.1A CN110949737A (en) | 2019-12-17 | 2019-12-17 | Small-size vacuum skin packagine machine |
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| CN110949737A true CN110949737A (en) | 2020-04-03 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201911401032.1A Pending CN110949737A (en) | 2019-12-17 | 2019-12-17 | Small-size vacuum skin packagine machine |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022171079A1 (en) * | 2021-02-10 | 2022-08-18 | 广州亚俊氏真空科技股份有限公司 | Multifunctional vacuum packaging machine |
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2019
- 2019-12-17 CN CN201911401032.1A patent/CN110949737A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022171079A1 (en) * | 2021-02-10 | 2022-08-18 | 广州亚俊氏真空科技股份有限公司 | Multifunctional vacuum packaging machine |
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